Application of the Chinese version of brief illness perception questionnaire in patients with somatoform disorder

Abstract:

Objective：To introduce the Chinese version of brief illness perception questionnaire（B-IPQ） and to investigate its psycho－metric attributes in patients with somatoform disorder. Methods：Totally 237 patients with somatoform disorder were chosen to com－plete the Chinese version B-IPQ；item analysis，exploratory factor analysis，internal consistency checking，etc were conducted. At the same time，they were asked to complete the SDS and SAS to test the criterion related validity. Ninety-five of the 237 patients were asked to complete the Chinese version B-IPQ again after 2 weeks to test the test-retest reliability. Results：Item analysis showed that correlation coefficients of each item score and total score were 0.556-0.842；there were significant differences in each item scores and total score between high score group and low score group；the Cronbach’s α coefficient was 0.831；the test-retest reliability of the scale and each entry were 0.931，0.771-0.849. Exploratory factor analysis showed that the B-IPQ had a single dimension scale char－acteristic. Correlations coefficients with SAS，SDS scores were 0.640，0.616. Conclusion：The Chinese version of B-IPQ has good psy－chometric attributes to assess the illness perception status of patients with somatoform disorder and can be taken as an effective in－strument.