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Nationwide, 45.6% of students had had sexual intercourse during their lifetime. Overall, male students (48.5%) were significantly more likely than female students (42.9%) to have had sexual intercourse. This significant sex difference was identified for black students and students in grade 9. Overall, black students (60.8%) were significantly more likely than Hispanic and white students (48.4% and 43.2%, respectively) to have had sexual intercourse. Black female students (53.4%) were significantly more likely than white female students (41.3%) to have had sexual intercourse. Black and Hispanic male students (68.8% and 53%, respectively) were significantly more likely than white male students (45.1%) to have had sexual intercourse, and black male students (68.8%) were significantly more likely than Hispanic male students (53%) to report this behavior. Overall, students in grades 11 and 12 (51.9% and 60.5%, respectively) were significantly more likely than students in grades 9 and 10 (34.4% and 40.8%, respectively) to have had sexual intercourse, and students in grade 12 (60.5%) were significantly more likely than students in grade 11 (51.9%) to report this behavior. Prevalence of lifetime sexual intercourse ranged from 32.7% to 60.6% (median: 44.3%) across state surveys and from 29.8% to 61.6% (median: 50.8%) across local surveys. Nationwide, 6.6% of students had initiated sexual intercourse before age 13 years. Overall, male students (9.3%) were significantly more likely than female students (4%) to have initiated sexual intercourse before age 13 years. This significant sex difference was identified for all the racial/ethnic and grade subpopulations. Overall, black students (16.3%) were significantly more likely than Hispanic and white students (7.6% and 4.7%, respectively) to have initiated sexual intercourse before age 13 years. This significant racial/ethnic difference was identified for male students. Hispanic male students (11.4%) were significantly more likely than white male students (6.2%) to report this behavior. Black female students (7.6%) were significantly more likely than white female students (3.3%) to have initiated sexual intercourse before age 13 years. Overall, students in grades 9 and 10 (9.2% and 7.5%, respectively) were significantly more likely than students in grades 11 and 12 (4.6% and 3.6%, respectively) to have initiated sexual intercourse before age 13 years. Across state surveys, prevalence varied fivefold from 3.1% to 14% (median: 5.3%). Prevalence varied threefold from 5.2% to 17.2% (median: 10.9%) across local surveys. Nationwide, 14.2% of students had had sexual intercourse during their lifetime with >4 sex partners. Male students (17.2%) were significantly more likely than female students (11.4%) to have had >4 sex partners. This significant sex difference was identified for black and Hispanic students and students in grades 9, 10, and 11. Overall, black students (26.6%) were significantly more likely than Hispanic and white students (14.9% and 12%, respectively) to report this behavior. Black female students (15.6%) were significantly more likely than Hispanic female students (9.5%) to have had >4 sex partners. Black male students (38.7%) were significantly more likely than Hispanic and white male students (20.6% and 12.8%, respectively) to have had >4 sex partners, and Hispanic male students (20.6%) were significantly more likely than white male students (12.8%) to report this behavior. Overall, students in grade 11 (15.2%) were significantly more likely than students in grade 9 (9.6%) to have had >4 sexual partners, and students in grade 12 (21.6%) were significantly more likely than students in grades 9, 10, and 11 (9.6%, 12.6%, and 15.2%, respectively) to report this behavior. Prevalence varied threefold from 8.4% to 25.5% (median: 13.2%) across state surveys. Across local surveys, prevalence varied threefold from 7.8% to 25.9% (median: 18.9%). One third (33.4%) of students nationwide had had sexual intercourse during the 3 months preceding the survey (i.e., currently sexually active). Black male students (52.3%) were significantly more likely than black female students (39.5%) to be currently sexually active. Overall, black students (45.6%) were significantly more likely than Hispanic and white students (35.9% and 31.3%, respectively) to be currently sexually active. This significant racial/ethnic difference was identified for male students, and Hispanic male students (37.3%) were significantly more likely than white male students (30%) to report this behavior. Overall, students in grades 10, 11, and 12 (29.7%, 38.1%, and 47.9%, respectively) were significantly more likely than students in grade 9 (22.7%) to be currently sexually active; students in grades 11 and 12 (38.1% and 47.9%, respectively) were significantly more likely than students in grade 10 (29.7%) to report this behavior; and students in grade 12 (47.9%) were significantly more likely than students in grade 11 (38.1%) to report this behavior. Prevalence ranged from 23% to 44.9% (median: 33.3%) across state surveys. Across local surveys, prevalence ranged from 19.8% to 45.1% (median: 35.9%). Nationwide, 86.1% of students had never had sexual intercourse, had sexual intercourse but not during the 3 months preceding the survey, or had used a condom the last time they had sexual intercourse during the 3 months preceding the survey (i.e., responsible sexual behavior). Overall, male students (88.5%) were significantly more likely than female students (83.9%) to have engaged in responsible sexual behavior. This significant sex difference was identified for white students and students in grades 10 and 12. Overall, students in grade 9 (92.8%) were significantly more likely than students in grades 10, 11, and 12 (88.3%, 84.5%, and 75.8%, respectively) to have engaged in responsible sexual behavior; students in grade 10 (88.3%) were significantly more likely than students in grades 11 and 12 (84.5% and 75.8%, respectively) to report this behavior; and students in grade 11 (84.5%) were significantly more likely than students in grade 12 (75.8%) to report this behavior. Prevalence of responsible sexual behavior ranged from 83.7% to 92.8% (median: 87.1%) across state surveys and from 83.4% to 92.8% (median: 89.1%) across local surveys.
( Source: 2001 CDC Youth Risk Behavior Surveillance Survey )
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