First CRUSH: Piloting the Preliminary Feasibility and Acceptability of the Competence in Romance and Understanding Sexual Health (CRUSH) Curriculum

A qualitative measure of the acceptability of intervention was collected at each timepoint. Quantitative acceptability ratings about the CRUSH curriculum were obtained at the conclusion of intervention using a 5-point rating scale, with "1" indicating agreement with a statement about the curriculum and "5" indicating disagreement. Items were: I would be likely to recommend the program to a friend. Knowing what I know now, I'm happy with my choice to participate in the CRUSH Program. The program was easy to understand. The CRUSH Program presented information clearly. The program was relevant to me and my experience. The program was helpful. I learned new information from the program. I feel more confident in my ability try new things in relationships or sexual experiences after participating in the program. I have new skills/behaviors after participating in the program. Items were averaged into a total score (range: 1-5); lower scores reflected higher agreement/better acceptability.

Analysis of missing items or session content that cannot be completed (fewer missing items indicates better feasibility)

A measure of 18 terms related to basic knowledge of sexual health and anatomy. The Vocabulary Accuracy score measures the ability to provide definitions of sexual health terms (knowledge) and is scored on a 3-point scale for accuracy: 2 for a detailed correct answer, 1 for a generally correct answer, and 0 for a response of "don't know" or an incorrect answer. The Pragmatics score measures sociocultural competence (slang), vulgarity, mechanical language, relevancy, strategic competence, and discourse competence. Pragmatics are scored scored on a scale of 0-2 with 0 representing the highest level of pragmatic skill and 2 represented the lowest score for each item. This test was used as a measure of target engagement. Partial eta squared effect size is for change over time (baseline, midpoint, post) modeled with repeated measures ANOVA.

A measure of sexual health and intimate behavior to be used as a primary outcome in a future trial (higher scores indicate higher levels of behavior) measures possible outcomes of sexuality education programs including changes in behavior that facilitate a positive and fulfilling sexuality and sexual health and independent of relationship status. It includes 45 items that include the skill with which a behavior is completed, comfort during that behavior, and the frequency of the behavior; responses use a 5-point rating, a 4-point rating, and the frequency in the past month, respectively. Partial eta squared effect size is for change over time (baseline, midpoint, post) modeled with repeated measures ANOVA.