Methods: Weighted data on sexually active adolescent girls aged 12-18 from the 2021 Youth Risk Behavior Surveillance System was analyzed. Chi-squared and binary logistic regression models estimated the association between non-barrier method contraception and condom use.

Results: Among our target population, 48.9% used condoms; 20.4% used birth control pills; 9.0% used IUD or implant; and 3.6% used the shot, ring, or patch the last time they had sex. There was a significantly smaller proportion of girls using birth control pills, IUD/implants, and shot/patch/rings who used condoms compared to those who did not use the aforementioned methods, respectively (X²(1,N=2096)=36.115,p=.002; X²(1,N=2096)=36.94,p<.001; X²(1,N=2096)=7.83,p=.007). Girls using the birth control pill, IUD/implant, or shot/patch/ring were significantly less likely to use condoms than girls who did not use each of those methods (AOR=0.48;95%[0.30-0.76]; AOR=0.34;95%[0.21-0.53]; AOR=0.47;95%[0.28-0.81]).

Conclusion: Adolescent girls who use non-barrier method contraception are less likely to use condoms, increasing their risk of STIs. This highlights the importance of STI prevention education when prescribing contraception to adolescents.