Development and evaluation of measures to assess self-determination in peripartum contraceptive decision-making.

We aimed to adapt and validate person-centered measures to evaluate various contributors to self-determination in perinatal contraceptive decision-making. We developed and administered four scales adapted from existing measures in the context of Self-Determination Theory: the Treatment Self-Regulation Questionnaire (TSRQ), Perceived Competence Scale, modified Health Care Climate Questionnaire, and Important Other Climate Questionnaire. The TSRQ consists of three subscales: autonomous motivation, controlled motivation, and amotivation. We recruited a nonprobability convenience sample of 300 hospitalized postpartum patients in Baltimore, MD, between 2015 and 2016 and administered surveys in English and Spanish. We validated the scales with Cronbach's alpha coefficients, confirmatory factor analysis, and invariance analysis. We examined construct validity by testing correlations between the scales and other person-centered measures, such as satisfaction with counseling. Cronbach's alpha was >0.8 except for the amotivation subscale. Confirmatory factor analysis was adequate for all scales. Autonomous motivation correlated positively and significantly with perceived competence, health care provider autonomy support, important other autonomy support, and other measures of patient satisfaction. We found the four scales to be internally consistent and valid except for the amotivation subscale. We recommend using the autonomous motivation subscale in place of the full TSRQ. The autonomous motivation subscale, Perceived Competence Scale, modified Health Care Climate Questionnaire, and Important Other Climate Questionnaire showed adequate internal consistency, construct validity, and adherence to the expected conceptual structure of the scales. Autonomous decision-making is central to ethics and quality of care, especially for contraceptive methods that require a provider for initiation or discontinuation and at more vulnerable times, such as postpartum and postabortion. These scales may help tailor person-centered and autonomy-supportive interventions and programs to improve contraceptive counseling and care delivery.

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