AIDS and Behavior

, Volume 11, Issue 4, pp 557–574 | Cite as

Development and Psychometric Evaluation of a Self-administered Questionnaire to Measure Knowledge of Sexually Transmitted Diseases

  • Beth C. Jaworski
  • Michael P. CareyEmail author
Original Paper


This research developed and evaluated a brief but comprehensive measure of knowledge about sexually transmitted diseases (STDs) for use in research and applied settings. Questionnaire construction involved a review of empirical precedents as well as qualitative work with STD experts (n = 6) and the target population (n = 40). Eighty-five items were piloted (n = 50) and tested (n = 391) with college students. Item- and test-level analyses identified items that were eliminated to shorten the questionnaire. Factor analyses revealed a two-factor model of STD knowledge, including a Cause/Cure factor and a General Knowledge factor. Six supplemental items were added to the final questionnaire for their public health value and resulted in the 27-item STD-Knowledge Questionnaire (STD-KQ). The STD-KQ demonstrated internal consistency (α = .86) and test–retest reliability (r = .88) over a brief period. Evidence for the validity of the STD-KQ was obtained through a comparison with a validated HIV knowledge questionnaire (Carey & Schroder, 2002); treatment outcome sensitivity was obtained in response to an educational program. Use of the STD-KQ will enable researchers and health educators to identify knowledge deficits, measure knowledge for theory testing, evaluate risk reduction programs, and assess treatment response in research and applied settings.


STD HIV Knowledge Questionnaires Psychometrics 



This research was supported by grant R01-MH54929 from the National Institute of Mental Health to Michael P. Carey.


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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Center for Health and BehaviorSyracuse UniversitySyracuseUSA
  2. 2.California State University San BernardinoSan BernardinoUSA

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