Confirmatory and Exploratory Measures
STIS, EVENTS
Three confirmatory behavioral outcomes were assessed: LARC use, sex without a condom, and STI testing. Operational definitions for these confirmatory outcomes, all inclusion criteria, and the analytic framework and procedures to estimate the efficacy of plan A were prespecified prior to outcome data collection. LARC use was operationalized as a dichotomous variable; participants were coded as either (1) not currently using or (2) using an intrauterine device (IUD) or implant. Times having sex with no condom in the past 3 months was constructed as a count variable that quantified the number of times a participant reported not using condoms while engaging in any type of sex (vaginal, oral, or anal) over the past 3 months. Participants who reported always using condoms during each sex act or no sex in the past 3 months were coded as zero. STI testing in the past 3 months was constructed as a dichotomous variable where participants were coded as either having been tested for STIs in the past 3 months or not.Exploratory measures included contraceptive knowledge, HIV/STI risk perception, pregnancy risk perception, HIV testing, and post-visit questionnaire items. Contraceptive knowledge was measured with 10 true or false questions; scores represent the proportion of items to which the participant provided an accurate response. Pregnancy risk perception and HIV/STI risk perception were each assessed with two items using a seven-point semantic-differential scale that asked participants to indicate how likely they thought certain events would happen over the course of a year if they engaged in specific risk behaviors; a low score indicates low perceived likelihood and a high score indicates high likelihood. HIV testing in the past 3 months was constructed identically to the STI testing measure.Post-visit questionnaire items that asked about topics discussed with the provider during the health visit were used to construct nine binary variables with participants coded as discussed or not discussed. The final three items pertaining to comfort level and satisfaction with the provider were each assessed with one item using a five-point semantic-differential scale; a low score indicates low comfort/satisfaction and a high score indicates high comfort/satisfaction.