Measuring Obsessive-Compulsive Symptoms: Padua Questionnaire

To measure washing compulsions and contamination obsessions, Padua Questionnaire (Modified by Washington State University) was used [27 (link)]. Subjects' responses to each item are scored on a 5-point Likert scale (0 = not at all, 1 = low, 2 = somewhat, 3 = high, and 4 = very high). High scores indicated a high level of obsessive–compulsive symptoms in the subject. Van Open [28 (link)] obtained obsessive–compulsive symptoms coefficients at 0.94 for Padua questionnaire and above 0.80 for its subscales. In the present study, Cronbach's alpha coefficient for this questionnaire was 0.875.