부산대학교 도서관

How much adolescents know about sex is critical in designing and/or performing a program on sexual education. We aimed so design a questionnaire to measure the sexual knowledge of grade 7-12 students. Its validity and reliability was also examined. The framework of our sexual knowledge questionnaire included sexual physiology, pregnancy, contraceptive methods, abortion, and sexually transmitted disease. The answer choices were ”yes”, ”no”, ”don't understand the question”, ”do not know”, Expert validity, item analysis, group differences of construct validity, test-retest reliability and internal consistency were performed. The average rating for the sexual questionnaire by 9 experts was over 3.5 and 20 questions were finalized. From September to December 2005, 3087 students filled out the questionnaire with a response rate of 97.0%. The item difficulty ranged from 30.5% to 75.1% and item discrimination ranged from 28.6% to 67.3%. The correct proportion of sexual knowledge was lowest in students from junior high school (grade 7-9), followed by grade 10-12 students from night school, vocational school, and senior high school. This supports the group differences in construct validity of our sexual knowledge measure. Cronbach's a was 0.78, suggesting our questionnaire had good internal consistency. Another 70 students (45 boys and 25 girls) filled not the questionnaire twice in two weeks. The test-retest reliability (r) was 0.75, indicating die sexual knowledge measured by our questionnaire was stable over time. In conclusion, the content validity timed item analysis, group differences of construct validity, rest-retest reliability sod internal consistency of our sexual knowledge questionnaire were acceptable. We welcomed other researchers using our questionnaire to measure sexual knowledge in teenagers so the finding can be compared on the same basis.