Although tubal sterilization is common, especially among those with lower income and education levels, misunderstandings persist about the reversibility of the procedure, and previous studies suggest that many pregnant individuals are not making well-informed decisions, wrote Sonya Borrero, MD, of the University of Pittsburgh, and colleagues.
In a study published in JAMA Network Open, the researchers randomized 350 pregnant individuals with Medicaid insurance to usual care or usual care plus a web-based decision aid in English or Spanish called MyDecision/MiDecisión that included written, audio, and video information about tubal sterilization. The tool also included an interactive table comparing tubal sterilization to other contraceptive options, exercises to clarify patients’ values, knowledge checks, and a final summary report.
The two primary outcomes were knowledge of tubal sterilization based on a 10-question true/false test and decisional conflict about contraceptive choices using the low-literacy Decision Conflict Scale. The participants ranged in age from 21 to 45 years, with a mean age of 29.7 years. Participants were randomized prior to 24 weeks’ gestation, and those in the intervention group completed the intervention immediately using a personal device or a university device in the clinical setting. Further assessments occurred by phone during the third trimester and at 3 months postpartum.
Participants in the decision aid group showed significantly greater knowledge of tubal sterilization compared with controls, with a mean of 76.5% correct responses to the knowledge questions, vs. 55.6% in the control group (P < .001). Decisional conflict scores also were significantly lower in the intervention group compared with controls (mean 12.7 vs. 18.7, P = .002).
The most dramatic knowledge gap related to permanence of tubal sterilization; 90.1% of participants in the intervention group answered correctly that the procedure is not easily reversible, compared to 39.3% of the controls. Similarly, 86.6% of the intervention group responded correctly that the tubes do not “come untied” spontaneously, vs. 33.7% of controls (P < .001 for both).
The findings were limited by several factors including the focus only on pregnant Medicaid patients, the presentation of the decision tool only at a point early in pregnancy, which may have been too soon for some participants to consider tubal sterilization, and a lack of data on long-term satisfaction or regret about tubal sterilization decisions, the researchers noted.
However, the knowledge differences between the intervention and control groups remained significant at the third trimester assessment, they said.
More research is needed in other populations and using other time points, but the current study results suggest that use of the MyDecision/MiDecisión tool in a real-world clinical setting at the actual time of decision-making could improve knowledge and inform patients’ choices, the researchers concluded. Improved patient education also could inform policy decisions about the potential elimination of the 30-day waiting period for sterilization procedures, they said.
The study was supported by the National Institute on Minority Health and Health Disparities. The researchers had no financial conflicts to disclose.