Assessing Intravaginal Practices in HIV Prevention Research: Development and Validation of an Intravaginal Practices Questionnaire

Abstract

Intravaginal practices (IVPs) refer to placing items (e.g., water, soap, commercial douches, fingers, rags) inside the vagina. IVPs have been shown to contribute to the development of bacterial vaginosis (BV) and may increase sexually transmitted infections and HIV risk. We developed the Intravaginal Practices Questionnaire (IVQ). The purpose of this study was to validate the IVQ, with the goal of establishing a consistent method of assessing IVP across studies. Women enrolled in this study (n = 180) were on average 30 years of age (SD = 8.32). Half (54%) identified as non-Hispanic, and 45% identified as Black; 41% reported lifetime IVP. Past month IVP use included commercial douches (9%), water (35%), fingers (41%), soap (21%), cloths/rags/wipes (10%), and vinegar (3%), which were placed in the vagina. No women used yogurt or herbs. An exploratory factor analysis indicated that a single-factor structure best explained the underlying constructs in participant responses in six endorsed items assessing commercial douches, water, fingers, soap, clothes/rags/ wipes, and vinegar use, suggesting that a common factor underlies these behaviors. All factor loadings were > 0.496. Cronbach’s α was 0.99, suggesting that the reliability of the scale was excellent. Lastly, a total IVQ score was related to BV diagnosis (p =.007) as well as self-reported symptoms of BV (p =.034). Results illustrate that the IVQ has adequate psychometric properties. This tool may be used by public health experts and clinicians to identify IVPs that may potentially increase HIV risk.