Use of a decision aid for prenatal testing of fetal abnormalities to improve women's informed decision making: A cluster randomised controlled trial [ISRCTN22532458]

Abstract

Objective: To evaluate the effectiveness of a decision aid for prenatal testing of fetal abnormalities compared with a pamphlet in supporting women's decision making. Design: A cluster randomised controlled trial. Setting: Primary health care. Population: Women in early pregnancy consulting a GP. Methods: GPs were randomised to provide women with either a decision aid or a pamphlet. The decision aid was a 24-page booklet designed using the Ottowa Decision Framework. The pamphlet was an existing resource available in the trial setting. Main outcome measures: Validated scales were used to measure the primary outcomes, informed choice and decisional conflict, and the secondary outcomes, anxiety..