Cardiac arrest is rare in pregnancy, and up-to date competence can be difficult to assess and maintain. The objective of this study was to develop and validate a questionnaire to assess healthcare personnel experiences, self-assessed competence and perception of role and resposibility related to cardiac arrest and cardio-pulmonary resuscitation (CPR) in pregnancy. The study had a cross-sectional design, developing and validating a questionnaire: the Competence in cardiac arrest and CPR in

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... ncy (ComCA-P). Development and validation of the ComCA-P was conducted in three stages: 1) Literature review and expert group panel inputs, 2) a pilot study and 3) a cross-sectional questionnaire study. In stage one, the ComCA-P was developed over several iterations between the researchers, including inputs from an expert group panel consisting of highly competent professionals (n = 11). In stage two, the questionnaire was piloted in a group of healthcare personnel with relevant competence (n = 16). The ComCA-P was then used in a baseline study including healthcare personnel potentially involved in CPR in pregnancy (n = 527) in six hospital wards. Based on these data, internal consistency, intra-class correlations, and confirmatory factor analysis were utilized to validate the questionnaire. The expert group and pilot study participants evaluated the appropriateness, relevance and accuracy to be high. Formulation of the items was considered appropriate, with no difficulties identified related to content- or face validity. Cronbach's alpha was 0.8 on the thematic area self-assessment, and 0.73 on the theoretical knowledge area of the ComCA-P. On both the self-assessed competence items and the teoretical knowledge items, Kaiser-Meyer-Olkin was 0.8. Moreover, the Bertletts' test of sphericity was greater than the critical value for chi-square, and significant (p < .0001). Findings indicate that the ComCA-P is a valid questionnaire that can be used to assess healthcare personnel competence in cardiac arrest and resuscitation in pregnancy.