Primary assessment of reliability and validity of the Chinese version of prodromal questionnaire-brief version / 中华行为医学与脑科学杂志

ABSTRACT

Objective To assess the reliability and validity of the Chinese version of Prodromal Questionnaire-Brief Version (PQ-B).Methods By convenience sampling,122 college students and clinical psychology outpatients were assessed by PQ-B and Symptom Checklist 90 (SCL-90).Eighty among them were rctcstcd with the PQ-B after 2 weeks to test test-retest reliability.Correlation analysis,exploratory factor analysis were used for data processing.Results The internal consistency reliability of the Chinese version of PQ-B was 0.894,the correlation coefficient between each item and total score were higher than 0.347 (all P ＜ 0.01),and when each of the total items deleted,the Cronbach' s Alpha of the whole score was lower than 0.894.Moreover,the test-retest reliability was 0.71 (P ＜ 0.01) and the Guttman Split-Half Coefficient was 0.874.The exploratory factor analysis showed that KMO was 0.833,and 65.22％ of the total variation could be explained by 6 factors,and the rotated pattern matrix value of item were 0.404-0.896 by direct oblimin.The total PQ-B score and the score of most of the extracted factors was significantly correlated with SCL-90(r=0.233-0.725,P＜0.01),while factor 5 had low correlation with subscales of Obsessive-Compulsive,Interpersonal Sensitivity,Depression and Hostility in SCL-90(r=0.154-0.206,P＞0.01).Conclusion The Chinese version of PQ-B suggested primarily good reliability and validity.