Psychometric analysis of Persian version of patient safety competency self-evaluation in psychiatric wards

Assessment of the patient safety competency is necessary for the growth of nursing and safe care profession as well as evaluation of the nurses' educational needs. The present study was conducted to determine psychometric properties of the Persian version of the patient safety competency self-evaluation (PSCSE) tool in Iranian psychiatric wards.

All nurses (n = 209) working in two psychiatric hospitals of Kerman, Iran, were included in the present cross-sectional study using census method. This tool contains 41 items: six items are related to knowledge, 14 items deal with attitude, and 21 items are about skill dimension. Psychometric properties of the questionnaire including its content and face validity were also examined. The factor structure of the questionnaire was evaluated using exploratory factor analysis. The internal consistency and reliability were assessed by test-retest method with an interval of 14 days. Cronbach's alpha and corrected item-total correlation were used to measure reliability.

The content validity index was 0.65 and the content validity ratio was 0.89. Item 14 was removed from the skill domain because it was not related to the psychiatric ward. According to the results of factor analysis, there was a significant relationship between the questions and the relevant factors. The correlation coefficient for test-retest with 14 days interval was intraclass correlation coefficient = 0.92 for the whole instrument and 0.89, 0.89, and 0.92 for the domains of knowledge, attitude, and skill, respectively. The internal consistency coefficient (Cronbach's alpha) of the whole tool was 0.95 and 0.95, 0.79, and 0.95 for the domains of knowledge, attitude, and skill, respectively. Finally, PSCSE Questionnaire was obtained with 40 items in dimensions of knowledge (6 items), attitude (14 items), and skills (20 items).

Persian version of the nurses' competency tool in ensuring patient safety in psychiatric wards has acceptable psychometric characteristics.