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A randomized, controlled study of 105 sexually active adolescent females, ages 15 to 19, was conducted to assess two techniques for measuring risky sexual behavior. Participants were randomized to either a written diary or automated telephone diary and were asked to complete a daily questionnaire regarding their sexual behavior over a four-week period.
To evaluate reporting variations between the two diary methods, the researchers used a variety of assessments, including generalized estimating equations and contingency table analysis. The findings indicate that the use of contraceptive barriers were less frequently reported and, in some cases, decreased over time on the automated reporting system. In contrast, participants using the written system reported an increase in male condom use (p=0.007). The researchers also note that fewer diary reports overall were recorded by teens ...