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Study 1 Overview (Bhasin et al)
Objective: To examine the effect of a multifactorial intervention for fall prevention on fall injury in community-dwelling older adults.
Design: This was a pragmatic, cluster randomized trial conducted in 86 primary care practices across 10 health care systems.
Setting and participants: The primary care sites were selected based on the prespecified criteria of size, ability to implement the intervention, proximity to other practices, accessibility to electronic health records, and access to community-based exercise programs. The primary care practices were randomly assigned to intervention or control.
Eligibility criteria for participants at those practices included age 70 years or older, dwelling in the community, and having an increased risk of falls, as determined by a history of fall-related injury in the past year, 2 or more falls in the past year, or being afraid of falling because of problems with balance or walking. Exclusion criteria were inability to provide consent or lack of proxy consent for participants who were determined to have cognitive impairment based on screening, and inability to speak English or Spanish. A total of 2802 participants were enrolled in the intervention group, and 2649 participants were enrolled in the control group.
Intervention: The intervention contained 5 components: a standardized assessment of 7 modifiable risk factors for fall injuries; standardized protocol-driven recommendations for management of risk factors; an individualized care plan focused on 1 to 3 risk factors; implementation of care plans, including referrals to community-based programs; and follow-up care conducted by telephone or in person. The modifiable risk factors included impairment of strength, gait, or balance; use of medications related to falls; postural hypotension; problems with feet or footwear; visual impairment; osteoporosis or vitamin D deficiency; and home safety hazards. The intervention was delivered by nurses who had completed online training modules and face-to-face training sessions focused on the intervention and motivational interviewing along with continuing education, in partnership with participants and their primary care providers. In the control group, participants received enhanced usual care, including an informational pamphlet, and were encouraged to discuss fall prevention with their primary care provider, including the results of their screening evaluation.
Main outcome measures: The primary outcome of the study was the first serious fall injury in a time-to-event analysis, defined as a fall resulting in a fracture (other than thoracic or lumbar vertebral fracture), joint dislocation, cut requiring closure, head injury requiring hospitalization, sprain or strain, bruising or swelling, or other serious injury. The secondary outcome was first patient-reported fall injury, also in a time-to-event analysis, ascertained by telephone interviews conducted every 4 months. Other outcomes included hospital admissions, emergency department visits, and other health care utilization. Adjudication of fall events and injuries was conducted by a team blinded to treatment assignment and verified using administrative claims data, encounter data, or electronic health record review.
Main results: The intervention and control groups were similar in terms of sex and age: 62.5% vs 61.5% of participants were women, and mean (SD) age was 79.9 (5.7) years and 79.5 (5.8) years, respectively. Other demographic characteristics were similar between groups. For the primary outcome, the rate of first serious injury was 4.9 per 100 person-years in the intervention group and 5.3 per 100 person-years in the control group, with a hazard ratio of 0.92 (95% CI, 0.80-1.06; P = .25). For the secondary outcome of patient-reported fall injury, there were 25.6 events per 100 person-years in the intervention group and 28.6 in the control group, with a hazard ratio of 0.90 (95% CI, 0.83-0.99; P =0.004). Rates of hospitalization and other secondary outcomes were similar between groups.
Conclusion: The multifactorial STRIDE intervention did not reduce the rate of serious fall injury when compared to enhanced usual care. The intervention did result in lower rates of fall injury by patient report, but no other significant outcomes were seen.
Study 2 Overview (Stark et al)
Objective: To examine the effect of a behavioral home hazard removal intervention for fall prevention on risk of fall in community-dwelling older adults.
Design: This randomized clinical trial was conducted at a single site in St. Louis, Missouri. Participants were community-dwelling older adults who received services from the Area Agency on Aging (AAA). Inclusion criteria included age 65 years and older, having 1 or more falls in the previous 12 months or being worried about falling by self report, and currently receiving services from an AAA. Exclusion criteria included living in an institution or being severely cognitively impaired and unable to follow directions or report falls. Participants who met the criteria were contacted by phone and invited to participate. A total of 310 participants were enrolled in the study, with an equal number of participants assigned to the intervention and control groups.
Intervention: The intervention included hazard identification and removal after a comprehensive assessment of participants, their behaviors, and the environment; this assessment took place during the first visit, which lasted approximately 80 minutes. A home hazard removal plan was developed, and in the second session, which lasted approximately 40 minutes, remediation of hazards was carried out. A third session for home modification that lasted approximately 30 minutes was conducted, if needed. At 6 months after the intervention, a booster session to identify and remediate any new home hazards and address issues was conducted. Specific interventions, as identified by the assessment, included minor home repair such as grab bars, adaptive equipment, task modification, and education. Shared decision making that enabled older adults to control changes in their homes, self-management strategies to improve awareness, and motivational enhancement strategies to improve acceptance were employed. Scripted algorithms and checklists were used to deliver the intervention. For usual care, an annual assessment and referrals to community services, if needed, were conducted in the AAA.
Main outcome measures: The primary outcome of the study was the number of days to first fall in 12 months. Falls were defined as unintentional movements to the floor, ground, or object below knee level, and falls were recorded through a daily journal for 12 months. Participants were contacted by phone if they did not return the journal or reported a fall. Participants were interviewed to verify falls and determine whether a fall was injurious. Secondary outcomes included rate of falls per person per 12 months; daily activity performance measured using the Older Americans Resources and Services Activities of Daily Living scale; falls self-efficacy, which measures confidence performing daily activities without falling; and quality of life using the SF-36 at 12 months.
Main results: Most of the study participants were women (74%), and mean (SD) age was 75 (7.4) years. Study retention was similar between the intervention and control groups, with 82% completing the study in the intervention group compared with 81% in the control group. Fidelity to the intervention, as measured by a checklist by the interventionist, was 99%, and adherence to home modification, as measured by number of home modifications in use by self report, was high at 92% at 6 months and 91% at 12 months. For the primary outcome, fall hazard was not different between the intervention and control groups (hazard ratio, 0.9; 95% CI, 0.66-1.27). For the secondary outcomes, the rate of falling was lower in the intervention group compared with the control group, with a relative risk of 0.62 (95% CI, 0.40-0.95). There was no difference in other secondary outcomes of daily activity performance, falls self-efficacy, or quality of life.
Conclusion: Despite high adherence to home modifications and fidelity to the intervention, this home hazard removal program did not reduce the risk of falling when compared to usual care. It did reduce the rate of falls, although no other effects were observed.
Commentary
Observational studies have identified factors that contribute to falls,1 and over the past 30 years a number of intervention trials designed to reduce the risk of falling have been conducted. A recent Cochrane review, published prior to the Bhasin et al and Stark et al trials, looked at the effect of multifactorial interventions for fall prevention across 62 trials that included 19,935 older adults living in the community. The review concluded that multifactorial interventions may reduce the rate of falls, but this conclusion was based on low-quality evidence and there was significant heterogeneity across the studies.2
The STRIDE randomized trial represents the latest effort to address the evidence gap around fall prevention, with the STRIDE investigators hoping this would be the definitive trial that leads to practice change in fall prevention. Smaller trials that have demonstrated effectiveness were brought to scale in this large randomized trial that included 86 practices and more than 5000 participants. The investigators used risk of injurious falls as the primary outcome, as this outcome is considered the most clinically meaningful for the study population. The results, however, were disappointing: the multifactorial intervention in STRIDE did not result in a reduction of risk of injurious falls. Challenges in the implementation of this large trial may have contributed to its results; falls care managers, key to this multifactorial intervention, reported difficulties in navigating complex relationships with patients, families, study staff, and primary care practices during the study. Barriers reported included clinical space limitations, variable buy-in from providers, and turnover of practice staff and providers.3 Such implementation factors may have resulted in the divergent results between smaller clinical trials and this large-scale trial conducted across multiple settings.
The second study, by Stark et al, examined a home modification program and its effect on risk of falls. A prior Cochrane review examining the effect of home safety assessment and modification indicates that these strategies are effective in reducing the rate of falls as well as the risk of falling.4 The results of the current trial showed a reduction in the rate of falls but not in the risk of falling; however, this study did not examine outcomes of serious injurious falls, which may be more clinically meaningful. The Stark et al study adds to the existing literature showing that home modification may have an impact on fall rates. One noteworthy aspect of the Stark et al trial is the high adherence rate to home modification in a community-based approach; perhaps the investigators’ approach can be translated to real-world use.
Applications for Clinical Practice and System Implementation
The role of exercise programs in reducing fall rates is well established,5 but neither of these studies focused on exercise interventions. STRIDE offered community-based exercise program referral, but there is variability in such programs and study staff reported challenges in matching participants with appropriate exercise programs.3 Further studies that examine combinations of multifactorial falls risk reduction, exercise, and home safety, with careful consideration of implementation challenges to assure fidelity and adherence to the intervention, are needed to ascertain the best strategy for fall prevention for older adults at risk.
Given the results of these trials, it is difficult to recommend one falls prevention intervention over another. Clinicians should continue to identify falls risk factors using standardized assessments and determine which factors are modifiable.
Practice Points
- Incorporating assessments of falls risk in primary care is feasible, and such assessments can identify important risk factors.
- Clinicians and health systems should identify avenues, such as developing programmatic approaches, to providing home safety assessment and intervention, exercise options, medication review, and modification of other risk factors.
- Ensuring delivery of these elements reliably through programmatic approaches with adequate follow-up is key to preventing falls in this population.
—William W. Hung, MD, MPH
1. Tinetti ME, Speechley M, Ginter SF. Risk factors for falls among elderly persons living in the community. N Engl J Med. 1988; 319:1701-1707. doi:10.1056/NEJM198812293192604
2. Hopewell S, Adedire O, Copsey BJ, et al. Multifactorial and multiple component interventions for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2018;7(7):CD012221. doi:0.1002/14651858.CD012221.pub2
3. Reckrey JM, Gazarian P, Reuben DB, et al. Barriers to implementation of STRIDE, a national study to prevent fall-related injuries. J Am Geriatr Soc. 2021;69(5):1334-1342. doi:10.1111/jgs.17056
4. Gillespie LD, Robertson MC, Gillespie WJ, et al. Interventions for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2012;2012(9):CD007146. doi:10.1002/14651858.CD007146.pub3
5. Sherrington C, Fairhall NJ, Wallbank GK, et al. Exercise for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2019;1(1):CD012424. doi:10.1002/14651858.CD012424.pub2
Study 1 Overview (Bhasin et al)
Objective: To examine the effect of a multifactorial intervention for fall prevention on fall injury in community-dwelling older adults.
Design: This was a pragmatic, cluster randomized trial conducted in 86 primary care practices across 10 health care systems.
Setting and participants: The primary care sites were selected based on the prespecified criteria of size, ability to implement the intervention, proximity to other practices, accessibility to electronic health records, and access to community-based exercise programs. The primary care practices were randomly assigned to intervention or control.
Eligibility criteria for participants at those practices included age 70 years or older, dwelling in the community, and having an increased risk of falls, as determined by a history of fall-related injury in the past year, 2 or more falls in the past year, or being afraid of falling because of problems with balance or walking. Exclusion criteria were inability to provide consent or lack of proxy consent for participants who were determined to have cognitive impairment based on screening, and inability to speak English or Spanish. A total of 2802 participants were enrolled in the intervention group, and 2649 participants were enrolled in the control group.
Intervention: The intervention contained 5 components: a standardized assessment of 7 modifiable risk factors for fall injuries; standardized protocol-driven recommendations for management of risk factors; an individualized care plan focused on 1 to 3 risk factors; implementation of care plans, including referrals to community-based programs; and follow-up care conducted by telephone or in person. The modifiable risk factors included impairment of strength, gait, or balance; use of medications related to falls; postural hypotension; problems with feet or footwear; visual impairment; osteoporosis or vitamin D deficiency; and home safety hazards. The intervention was delivered by nurses who had completed online training modules and face-to-face training sessions focused on the intervention and motivational interviewing along with continuing education, in partnership with participants and their primary care providers. In the control group, participants received enhanced usual care, including an informational pamphlet, and were encouraged to discuss fall prevention with their primary care provider, including the results of their screening evaluation.
Main outcome measures: The primary outcome of the study was the first serious fall injury in a time-to-event analysis, defined as a fall resulting in a fracture (other than thoracic or lumbar vertebral fracture), joint dislocation, cut requiring closure, head injury requiring hospitalization, sprain or strain, bruising or swelling, or other serious injury. The secondary outcome was first patient-reported fall injury, also in a time-to-event analysis, ascertained by telephone interviews conducted every 4 months. Other outcomes included hospital admissions, emergency department visits, and other health care utilization. Adjudication of fall events and injuries was conducted by a team blinded to treatment assignment and verified using administrative claims data, encounter data, or electronic health record review.
Main results: The intervention and control groups were similar in terms of sex and age: 62.5% vs 61.5% of participants were women, and mean (SD) age was 79.9 (5.7) years and 79.5 (5.8) years, respectively. Other demographic characteristics were similar between groups. For the primary outcome, the rate of first serious injury was 4.9 per 100 person-years in the intervention group and 5.3 per 100 person-years in the control group, with a hazard ratio of 0.92 (95% CI, 0.80-1.06; P = .25). For the secondary outcome of patient-reported fall injury, there were 25.6 events per 100 person-years in the intervention group and 28.6 in the control group, with a hazard ratio of 0.90 (95% CI, 0.83-0.99; P =0.004). Rates of hospitalization and other secondary outcomes were similar between groups.
Conclusion: The multifactorial STRIDE intervention did not reduce the rate of serious fall injury when compared to enhanced usual care. The intervention did result in lower rates of fall injury by patient report, but no other significant outcomes were seen.
Study 2 Overview (Stark et al)
Objective: To examine the effect of a behavioral home hazard removal intervention for fall prevention on risk of fall in community-dwelling older adults.
Design: This randomized clinical trial was conducted at a single site in St. Louis, Missouri. Participants were community-dwelling older adults who received services from the Area Agency on Aging (AAA). Inclusion criteria included age 65 years and older, having 1 or more falls in the previous 12 months or being worried about falling by self report, and currently receiving services from an AAA. Exclusion criteria included living in an institution or being severely cognitively impaired and unable to follow directions or report falls. Participants who met the criteria were contacted by phone and invited to participate. A total of 310 participants were enrolled in the study, with an equal number of participants assigned to the intervention and control groups.
Intervention: The intervention included hazard identification and removal after a comprehensive assessment of participants, their behaviors, and the environment; this assessment took place during the first visit, which lasted approximately 80 minutes. A home hazard removal plan was developed, and in the second session, which lasted approximately 40 minutes, remediation of hazards was carried out. A third session for home modification that lasted approximately 30 minutes was conducted, if needed. At 6 months after the intervention, a booster session to identify and remediate any new home hazards and address issues was conducted. Specific interventions, as identified by the assessment, included minor home repair such as grab bars, adaptive equipment, task modification, and education. Shared decision making that enabled older adults to control changes in their homes, self-management strategies to improve awareness, and motivational enhancement strategies to improve acceptance were employed. Scripted algorithms and checklists were used to deliver the intervention. For usual care, an annual assessment and referrals to community services, if needed, were conducted in the AAA.
Main outcome measures: The primary outcome of the study was the number of days to first fall in 12 months. Falls were defined as unintentional movements to the floor, ground, or object below knee level, and falls were recorded through a daily journal for 12 months. Participants were contacted by phone if they did not return the journal or reported a fall. Participants were interviewed to verify falls and determine whether a fall was injurious. Secondary outcomes included rate of falls per person per 12 months; daily activity performance measured using the Older Americans Resources and Services Activities of Daily Living scale; falls self-efficacy, which measures confidence performing daily activities without falling; and quality of life using the SF-36 at 12 months.
Main results: Most of the study participants were women (74%), and mean (SD) age was 75 (7.4) years. Study retention was similar between the intervention and control groups, with 82% completing the study in the intervention group compared with 81% in the control group. Fidelity to the intervention, as measured by a checklist by the interventionist, was 99%, and adherence to home modification, as measured by number of home modifications in use by self report, was high at 92% at 6 months and 91% at 12 months. For the primary outcome, fall hazard was not different between the intervention and control groups (hazard ratio, 0.9; 95% CI, 0.66-1.27). For the secondary outcomes, the rate of falling was lower in the intervention group compared with the control group, with a relative risk of 0.62 (95% CI, 0.40-0.95). There was no difference in other secondary outcomes of daily activity performance, falls self-efficacy, or quality of life.
Conclusion: Despite high adherence to home modifications and fidelity to the intervention, this home hazard removal program did not reduce the risk of falling when compared to usual care. It did reduce the rate of falls, although no other effects were observed.
Commentary
Observational studies have identified factors that contribute to falls,1 and over the past 30 years a number of intervention trials designed to reduce the risk of falling have been conducted. A recent Cochrane review, published prior to the Bhasin et al and Stark et al trials, looked at the effect of multifactorial interventions for fall prevention across 62 trials that included 19,935 older adults living in the community. The review concluded that multifactorial interventions may reduce the rate of falls, but this conclusion was based on low-quality evidence and there was significant heterogeneity across the studies.2
The STRIDE randomized trial represents the latest effort to address the evidence gap around fall prevention, with the STRIDE investigators hoping this would be the definitive trial that leads to practice change in fall prevention. Smaller trials that have demonstrated effectiveness were brought to scale in this large randomized trial that included 86 practices and more than 5000 participants. The investigators used risk of injurious falls as the primary outcome, as this outcome is considered the most clinically meaningful for the study population. The results, however, were disappointing: the multifactorial intervention in STRIDE did not result in a reduction of risk of injurious falls. Challenges in the implementation of this large trial may have contributed to its results; falls care managers, key to this multifactorial intervention, reported difficulties in navigating complex relationships with patients, families, study staff, and primary care practices during the study. Barriers reported included clinical space limitations, variable buy-in from providers, and turnover of practice staff and providers.3 Such implementation factors may have resulted in the divergent results between smaller clinical trials and this large-scale trial conducted across multiple settings.
The second study, by Stark et al, examined a home modification program and its effect on risk of falls. A prior Cochrane review examining the effect of home safety assessment and modification indicates that these strategies are effective in reducing the rate of falls as well as the risk of falling.4 The results of the current trial showed a reduction in the rate of falls but not in the risk of falling; however, this study did not examine outcomes of serious injurious falls, which may be more clinically meaningful. The Stark et al study adds to the existing literature showing that home modification may have an impact on fall rates. One noteworthy aspect of the Stark et al trial is the high adherence rate to home modification in a community-based approach; perhaps the investigators’ approach can be translated to real-world use.
Applications for Clinical Practice and System Implementation
The role of exercise programs in reducing fall rates is well established,5 but neither of these studies focused on exercise interventions. STRIDE offered community-based exercise program referral, but there is variability in such programs and study staff reported challenges in matching participants with appropriate exercise programs.3 Further studies that examine combinations of multifactorial falls risk reduction, exercise, and home safety, with careful consideration of implementation challenges to assure fidelity and adherence to the intervention, are needed to ascertain the best strategy for fall prevention for older adults at risk.
Given the results of these trials, it is difficult to recommend one falls prevention intervention over another. Clinicians should continue to identify falls risk factors using standardized assessments and determine which factors are modifiable.
Practice Points
- Incorporating assessments of falls risk in primary care is feasible, and such assessments can identify important risk factors.
- Clinicians and health systems should identify avenues, such as developing programmatic approaches, to providing home safety assessment and intervention, exercise options, medication review, and modification of other risk factors.
- Ensuring delivery of these elements reliably through programmatic approaches with adequate follow-up is key to preventing falls in this population.
—William W. Hung, MD, MPH
Study 1 Overview (Bhasin et al)
Objective: To examine the effect of a multifactorial intervention for fall prevention on fall injury in community-dwelling older adults.
Design: This was a pragmatic, cluster randomized trial conducted in 86 primary care practices across 10 health care systems.
Setting and participants: The primary care sites were selected based on the prespecified criteria of size, ability to implement the intervention, proximity to other practices, accessibility to electronic health records, and access to community-based exercise programs. The primary care practices were randomly assigned to intervention or control.
Eligibility criteria for participants at those practices included age 70 years or older, dwelling in the community, and having an increased risk of falls, as determined by a history of fall-related injury in the past year, 2 or more falls in the past year, or being afraid of falling because of problems with balance or walking. Exclusion criteria were inability to provide consent or lack of proxy consent for participants who were determined to have cognitive impairment based on screening, and inability to speak English or Spanish. A total of 2802 participants were enrolled in the intervention group, and 2649 participants were enrolled in the control group.
Intervention: The intervention contained 5 components: a standardized assessment of 7 modifiable risk factors for fall injuries; standardized protocol-driven recommendations for management of risk factors; an individualized care plan focused on 1 to 3 risk factors; implementation of care plans, including referrals to community-based programs; and follow-up care conducted by telephone or in person. The modifiable risk factors included impairment of strength, gait, or balance; use of medications related to falls; postural hypotension; problems with feet or footwear; visual impairment; osteoporosis or vitamin D deficiency; and home safety hazards. The intervention was delivered by nurses who had completed online training modules and face-to-face training sessions focused on the intervention and motivational interviewing along with continuing education, in partnership with participants and their primary care providers. In the control group, participants received enhanced usual care, including an informational pamphlet, and were encouraged to discuss fall prevention with their primary care provider, including the results of their screening evaluation.
Main outcome measures: The primary outcome of the study was the first serious fall injury in a time-to-event analysis, defined as a fall resulting in a fracture (other than thoracic or lumbar vertebral fracture), joint dislocation, cut requiring closure, head injury requiring hospitalization, sprain or strain, bruising or swelling, or other serious injury. The secondary outcome was first patient-reported fall injury, also in a time-to-event analysis, ascertained by telephone interviews conducted every 4 months. Other outcomes included hospital admissions, emergency department visits, and other health care utilization. Adjudication of fall events and injuries was conducted by a team blinded to treatment assignment and verified using administrative claims data, encounter data, or electronic health record review.
Main results: The intervention and control groups were similar in terms of sex and age: 62.5% vs 61.5% of participants were women, and mean (SD) age was 79.9 (5.7) years and 79.5 (5.8) years, respectively. Other demographic characteristics were similar between groups. For the primary outcome, the rate of first serious injury was 4.9 per 100 person-years in the intervention group and 5.3 per 100 person-years in the control group, with a hazard ratio of 0.92 (95% CI, 0.80-1.06; P = .25). For the secondary outcome of patient-reported fall injury, there were 25.6 events per 100 person-years in the intervention group and 28.6 in the control group, with a hazard ratio of 0.90 (95% CI, 0.83-0.99; P =0.004). Rates of hospitalization and other secondary outcomes were similar between groups.
Conclusion: The multifactorial STRIDE intervention did not reduce the rate of serious fall injury when compared to enhanced usual care. The intervention did result in lower rates of fall injury by patient report, but no other significant outcomes were seen.
Study 2 Overview (Stark et al)
Objective: To examine the effect of a behavioral home hazard removal intervention for fall prevention on risk of fall in community-dwelling older adults.
Design: This randomized clinical trial was conducted at a single site in St. Louis, Missouri. Participants were community-dwelling older adults who received services from the Area Agency on Aging (AAA). Inclusion criteria included age 65 years and older, having 1 or more falls in the previous 12 months or being worried about falling by self report, and currently receiving services from an AAA. Exclusion criteria included living in an institution or being severely cognitively impaired and unable to follow directions or report falls. Participants who met the criteria were contacted by phone and invited to participate. A total of 310 participants were enrolled in the study, with an equal number of participants assigned to the intervention and control groups.
Intervention: The intervention included hazard identification and removal after a comprehensive assessment of participants, their behaviors, and the environment; this assessment took place during the first visit, which lasted approximately 80 minutes. A home hazard removal plan was developed, and in the second session, which lasted approximately 40 minutes, remediation of hazards was carried out. A third session for home modification that lasted approximately 30 minutes was conducted, if needed. At 6 months after the intervention, a booster session to identify and remediate any new home hazards and address issues was conducted. Specific interventions, as identified by the assessment, included minor home repair such as grab bars, adaptive equipment, task modification, and education. Shared decision making that enabled older adults to control changes in their homes, self-management strategies to improve awareness, and motivational enhancement strategies to improve acceptance were employed. Scripted algorithms and checklists were used to deliver the intervention. For usual care, an annual assessment and referrals to community services, if needed, were conducted in the AAA.
Main outcome measures: The primary outcome of the study was the number of days to first fall in 12 months. Falls were defined as unintentional movements to the floor, ground, or object below knee level, and falls were recorded through a daily journal for 12 months. Participants were contacted by phone if they did not return the journal or reported a fall. Participants were interviewed to verify falls and determine whether a fall was injurious. Secondary outcomes included rate of falls per person per 12 months; daily activity performance measured using the Older Americans Resources and Services Activities of Daily Living scale; falls self-efficacy, which measures confidence performing daily activities without falling; and quality of life using the SF-36 at 12 months.
Main results: Most of the study participants were women (74%), and mean (SD) age was 75 (7.4) years. Study retention was similar between the intervention and control groups, with 82% completing the study in the intervention group compared with 81% in the control group. Fidelity to the intervention, as measured by a checklist by the interventionist, was 99%, and adherence to home modification, as measured by number of home modifications in use by self report, was high at 92% at 6 months and 91% at 12 months. For the primary outcome, fall hazard was not different between the intervention and control groups (hazard ratio, 0.9; 95% CI, 0.66-1.27). For the secondary outcomes, the rate of falling was lower in the intervention group compared with the control group, with a relative risk of 0.62 (95% CI, 0.40-0.95). There was no difference in other secondary outcomes of daily activity performance, falls self-efficacy, or quality of life.
Conclusion: Despite high adherence to home modifications and fidelity to the intervention, this home hazard removal program did not reduce the risk of falling when compared to usual care. It did reduce the rate of falls, although no other effects were observed.
Commentary
Observational studies have identified factors that contribute to falls,1 and over the past 30 years a number of intervention trials designed to reduce the risk of falling have been conducted. A recent Cochrane review, published prior to the Bhasin et al and Stark et al trials, looked at the effect of multifactorial interventions for fall prevention across 62 trials that included 19,935 older adults living in the community. The review concluded that multifactorial interventions may reduce the rate of falls, but this conclusion was based on low-quality evidence and there was significant heterogeneity across the studies.2
The STRIDE randomized trial represents the latest effort to address the evidence gap around fall prevention, with the STRIDE investigators hoping this would be the definitive trial that leads to practice change in fall prevention. Smaller trials that have demonstrated effectiveness were brought to scale in this large randomized trial that included 86 practices and more than 5000 participants. The investigators used risk of injurious falls as the primary outcome, as this outcome is considered the most clinically meaningful for the study population. The results, however, were disappointing: the multifactorial intervention in STRIDE did not result in a reduction of risk of injurious falls. Challenges in the implementation of this large trial may have contributed to its results; falls care managers, key to this multifactorial intervention, reported difficulties in navigating complex relationships with patients, families, study staff, and primary care practices during the study. Barriers reported included clinical space limitations, variable buy-in from providers, and turnover of practice staff and providers.3 Such implementation factors may have resulted in the divergent results between smaller clinical trials and this large-scale trial conducted across multiple settings.
The second study, by Stark et al, examined a home modification program and its effect on risk of falls. A prior Cochrane review examining the effect of home safety assessment and modification indicates that these strategies are effective in reducing the rate of falls as well as the risk of falling.4 The results of the current trial showed a reduction in the rate of falls but not in the risk of falling; however, this study did not examine outcomes of serious injurious falls, which may be more clinically meaningful. The Stark et al study adds to the existing literature showing that home modification may have an impact on fall rates. One noteworthy aspect of the Stark et al trial is the high adherence rate to home modification in a community-based approach; perhaps the investigators’ approach can be translated to real-world use.
Applications for Clinical Practice and System Implementation
The role of exercise programs in reducing fall rates is well established,5 but neither of these studies focused on exercise interventions. STRIDE offered community-based exercise program referral, but there is variability in such programs and study staff reported challenges in matching participants with appropriate exercise programs.3 Further studies that examine combinations of multifactorial falls risk reduction, exercise, and home safety, with careful consideration of implementation challenges to assure fidelity and adherence to the intervention, are needed to ascertain the best strategy for fall prevention for older adults at risk.
Given the results of these trials, it is difficult to recommend one falls prevention intervention over another. Clinicians should continue to identify falls risk factors using standardized assessments and determine which factors are modifiable.
Practice Points
- Incorporating assessments of falls risk in primary care is feasible, and such assessments can identify important risk factors.
- Clinicians and health systems should identify avenues, such as developing programmatic approaches, to providing home safety assessment and intervention, exercise options, medication review, and modification of other risk factors.
- Ensuring delivery of these elements reliably through programmatic approaches with adequate follow-up is key to preventing falls in this population.
—William W. Hung, MD, MPH
1. Tinetti ME, Speechley M, Ginter SF. Risk factors for falls among elderly persons living in the community. N Engl J Med. 1988; 319:1701-1707. doi:10.1056/NEJM198812293192604
2. Hopewell S, Adedire O, Copsey BJ, et al. Multifactorial and multiple component interventions for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2018;7(7):CD012221. doi:0.1002/14651858.CD012221.pub2
3. Reckrey JM, Gazarian P, Reuben DB, et al. Barriers to implementation of STRIDE, a national study to prevent fall-related injuries. J Am Geriatr Soc. 2021;69(5):1334-1342. doi:10.1111/jgs.17056
4. Gillespie LD, Robertson MC, Gillespie WJ, et al. Interventions for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2012;2012(9):CD007146. doi:10.1002/14651858.CD007146.pub3
5. Sherrington C, Fairhall NJ, Wallbank GK, et al. Exercise for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2019;1(1):CD012424. doi:10.1002/14651858.CD012424.pub2
1. Tinetti ME, Speechley M, Ginter SF. Risk factors for falls among elderly persons living in the community. N Engl J Med. 1988; 319:1701-1707. doi:10.1056/NEJM198812293192604
2. Hopewell S, Adedire O, Copsey BJ, et al. Multifactorial and multiple component interventions for preventing falls in older people living in the community. Cochrane Database Syst Rev. 2018;7(7):CD012221. doi:0.1002/14651858.CD012221.pub2
3. Reckrey JM, Gazarian P, Reuben DB, et al. Barriers to implementation of STRIDE, a national study to prevent fall-related injuries. J Am Geriatr Soc. 2021;69(5):1334-1342. doi:10.1111/jgs.17056
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