The main objective of this study was to examine day-to-day associations of coitus, sexual interest, partner emotional support, negative mood, and positive mood among adolescent women. Diaries assessed partner interactions, sexual activity, substance use, and mood. Participants were 146 adolescent women who provided 28,376 diary days. Correlates of coitus on a given day included age, increased coital frequency in previous week, coitus on the previous day, partner support, increased same-day sexual interest, and decreased same-day negative mood. The data demonstrate complex associations of sexual interest, mood, partner interactions, and sexual activity. The findings extend understanding of the sexuality of adolescent women and have implications for a variety of interventions to reduce sexually transmitted infections and unplanned pregnancies.
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