Validity and reliability of the knowledge-attitude-practice scale for prevention catheter associated urinary tract infection measurement

Abstract

Objective To develop a scale of catheter-associated urinary tract infection (CAUTI) knowledge-attitude-practice (KAP) and to test its psychometric properties, and to provide effective assessment tools for clinical evaluation of knowledge, attitude and practice of CAUTI prevention. Methods Based on KAP theory and CAUTI preventive current guideline, the scale was developed by using literature review, Delphi expert inquiry. A questionnaire survey was conducted among 300 medical workers in a third grade A hospital in Qingdao. Exploratory factor analysis and confirmatory factor analysis were both conducted to screen the items further. The psychometric properties of scale was tested. Results The finalized scale included 4 subscales and 45 items, amount to 63.21% of the variance contribution rate. The total Cronbach's alpha was 0.914, and the split half reliability was 0.812. The content validity of the scale was 0.895, while it ranged from 0.846-1.000 for each subscale. The correlation of item-to total was 0.711-0.862, and the correlation coefficient of item-to-item ranged from 0.425-0.564. Conclusions The scale of CAUTI KAP has good reliability and validity. It can be used to evaluate CAUTI related knowledge, attitude and practice level of medical workers. Key words: Catheter associated urinary tract infection; Knowledge-attitude-practice; Scale; Reliability; Validity