Validity and reliability of the questionnaire knowledge and self-care behaviors in the face of hypertension in pregnancy Validez y confiabilidad del cuestionario conocimientos y comportamientos de autocuidado ante hipertensión del embarazo

Abstract

Objetive: validate the questionnaire "Knowledge and self-care behaviors of pregnant women in the face of hypertensive disorders of pregnancy - CoNOCiTHE". Materials and methods: psychometric study of validity and reliability, conducted in the second half of 2022 in Santander, Colombia, with a sample of 217 pregnant women. Internal consistency was evaluated with Cronbach's alpha coefficient, test-retest reliability from the Intraclass Correlation Coefficient (ICC). To assess validity, convergent criterion and known groups were examined. Results: The scale con72 original items, after a correlation analysis led to the elimination of 14 items. The instrument in its definitive version showed an internal consistency of 0.67 and a test-retest stability with a CCI of 0.96. Convergent validity showed a significant correlation with the outcome’s knowledge: disease process (rho=0.405; p=0.019) and risk control: hypertension (rho= 0.503; p=0.003). In the validity of known groups differences were found in the scores of women with more than 20 weeks of gestation and less than 20 (p=0.009). Conclusions: The acceptable psychometric properties of the questionnaire make it a valid tool to evaluate knowledge and self-care behaviors in the face of hypertensive disorders of pregnancy in the Spanish language and in the Colombian context.