Email updates

Keep up to date with the latest news and content from BMC Medical Research Methodology and BioMed Central.

Open Access Research article

Limited benefit of repeating a sensitive question in a cross-sectional sexual health study

Abigail Norris Turner12*, Prabasaj Paul2 and Alison H Norris12

Author Affiliations

1 Division of Infectious Diseases, College of Medicine, Ohio State University, Columbus, OH, USA

2 Division of Epidemiology, College of Public Health, Ohio State University, Columbus, OH, USA

For all author emails, please log on.

BMC Medical Research Methodology 2013, 13:34  doi:10.1186/1471-2288-13-34

Published: 9 March 2013

Abstract

Background

Sexual health research relies heavily on self-reported data. We explored whether repeating a key measure ā€“ number of lifetime sexual partners ā€“ improved the validity of this self-reported response.

Methods

Using data from a study of Tanzanian plantation residents, we examined which of 505 participants changed their responses when a question about sexual partners was repeated. We examined which variable (first, second, or maximum response) was more predictive of herpes simplex virus type 2 (HSV-2) seropositivity, a biomarker strongly associated with number of lifetime partners. HSV-2 status was assessed using the HerpeSelect 2 ELISA IgG test.

Results

When asked a second time, 10.7% of participants increased and 3.6% decreased their reported number of partners. Participants using audio computer-assisted self-interviews were more likely to change than those interviewed in person (pā€‰=ā€‰0.006). The increased odds of HSV-2 seropositivity with each additional partner ranged from 10% to 13% in men, and 33% to 37% in women, depending on which partner variable was used. Estimates had considerable confidence interval overlap and no substantial differences in precision.

Conclusions

Some participants change their responses when asked a sensitive question a second time, but in this population, changes did not meaningfully affect associations between lifetime partners and HSV-2.

Keywords:
Sensitive behavior; ACASI; Sexually transmitted disease; Tanzania