Validity and reliability of the knowledge, attitude and practice (KAP) questionnaire about cervical cancer and its screening among Iranian women

Cervical screening has decreased the incidence and mortality of cervical cancer worldwide. Due to a low incidence rate of cervical cancer in Iran and several Middle Eastern countries, an opportunistic screening is available for women in this region. We aimed to design and validate a questionnaire about Knowledge, Attitude, and practice (KAP) for cervical cancer and cervical screening among Iranian women. We drafted a questionnaire about KAP of women about cervical cancer and its screening. Content validity was examined and the questionnaire was revised based on the scores provided by seven experts. We, studied reliability of the questions by performing test-retest analyses of data from 112 subjects and estimation of Cronbach Alpha and Interclass Correlation Coefficient (ICC). The questionnaire consist 67 questions about cervical cancer and its screening including 30 characteristics, 20 knowledge, 9 attitude and 8 practice questions. Knowledge questions had higher validity (0.8) than attitude and practice questions (0.6). Cronbach Alpha for knowledge, attitude and practice were 80, 82, and 93 percent, respectively. Corresponding Interclass correlations were 88, 77 and 95 percent, respectively. Validity and reliability of the designed questionnaire was sufficient to evaluate knowledge, attitude, and practice of women about cervical cancer and its screenin.