Did Not Use Birth Control Pills Before Last Sexual Intercourse With Opposite-Sex Partner
(to prevent pregnancy, not counting emergency contraception such as Plan B or the "morning after" pill, among students who were currently sexually active)
Chicago, IL, High School Youth Risk Behavior Survey, 2021
2021 | 93.0 (86.6–96.5) 114 | 87.1 (72.8–94.5) 46 | 97.0 (82.1–99.6) 68 |