Development and Validation of a Knowledge, Attitude and Practice Questionnaire for Venous Thromboembolism Prevention in Perinatal Women

Background Venous thromboembolism (VTE) is a significant complication among perinatal women. However, current tools for assessing VTE prevention are not suitable for pregnant women. In this study, we aim to develop and validate a VTE prevention knowledge, attitude and practice (VTE-KAP) questionnaire tailored to this population. Methods This study was conducted in two phases. Phase 1 involved creating a preliminary item pool through a literature review and group discussions, followed by expert consultations and a pre-survey. Phase 2 involved validating the questionnaire, which began by screening the items using correlation and factor analyses. Reliability was assessed using Cronbach’s alpha coefficient and retest reliability. Furthermore, structural validity was evaluated through exploratory and confirmatory factor analyses. Results The finalised VTE-KAP questionnaire consists of 37 items. The Kaiser–Meyer–Olkin measure of sampling adequacy was 0.751 for the knowledge dimension and 0.901 for the practice dimension. Bartlett’s test for sphericity confirmed statistical significance ( p  < 0.001). The Cronbach’s alpha coefficient was 0.913. Test-retest reliability for the overall questionnaire showed high stability, with coefficients for all dimensions exceeding 0.9 (0.993, 0.991, 0.988 and 0.994). Confirmatory factor analysis demonstrated the robust structural validity of the scale. Conclusion The VTE-KAP questionnaire is effective and reliable in psychometrics. It can scientifically evaluate the KAP related to VTE prevention in pregnant women.