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Background and purpose: A clear agreement is doubted in identifying vaginismus based on the clinical diagnostic criteria including pain, cramps and spasms. This study was performed to design a diagnostic questionnaire for vaginismus and investigating its psychometric characteristics. Materials and methods: This study was performed with a combinatorial approach. The final questionnaire was approved after performing 33 interviews and applying professional expertise in the qualitative part. In first stage of the quantitative part in face validity, the questionnaire was completed by 30 participants and its content validity was studied by 11 people from expert panel. Finally the validity was calculated by asking 100 patients. The internal and external validity were determined using Cronbach's alpha and test-retest in 30 patients with pain during examination. Results: At first, the changes in the qualitative stage of face validity was applied and the item effect index for 6 items were lower than 1.5 in the quantitative stage of face validity. Five questions did not receive desired points in CVR and CVI calculation in the quantitative part of content validity. KMO rate was 0.810 in the qualitative factor analysis. Also, the Bartlett's test of significance level was less than 5 percent. Cronbach alpha rate was calculated as 0.907. The external reliability was lower than 0.05. Conclusion: This instrument contains low number of questions, simple items to answer and is both reliable and valid, so it could be used for proper diagnosis of vaginismus in women with pain during sexual intercourse.

Keywords: Vaginismus diagnosis, validity, questionnaire Reliability

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