Improved pregnant women’s understanding of research information by an enhanced informed consent form: a randomised controlled study nested in neonatal research


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Abstract

ObjectiveThis study aimed to test the applicability and effectiveness of the enhanced informed consent form (ICF) methodology, proposed by the Strategic Initiative for Developing Capacity in Ethical Review (SIDCER), in neonatal research requiring maternal consent.DesignA single-centre open-label randomised controlled study.SettingAntenatal care clinics at Phramongkutklao Hospital, Thailand.Patients234 pregnant women who were at risk of preterm labour were enrolled; 232 individuals completed the study.InterventionsThe participants were randomly assigned to read either the SIDCER ICF or the conventional ICF.Main outcome measuresThe participants’ understanding of essential trial-related information was assessed using 25 closed-ended questions. The primary endpoint was the proportion of the participants who obtained the satisfactory level of understanding at 80% (score of ≥20/25).Results72.5% (87/120) of the participants in the SIDCER ICF group and 59.8% (67/112) of the conventional ICF group achieved the primary endpoint (relative risk (RR)=1.212, 95% CI 1.005 to 1.462, p=0.041). The superiority of the SIDCER ICF over the conventional ICF was significant, particularly among the participants whose education was at the high school level or below (63.5% vs 44.1%, RR=1.441, 95% CI 1.022 to 2.030, p=0.031).ConclusionsThe SIDCER ICF methodology is applicable to neonatal research requiring maternal consent. The SIDCER ICF significantly improved the understanding of pregnant women, particularly among those with lower levels of education. The present study confirms the value of the SIDCER ICF methodology in research involving individuals with a limited academic background.

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