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. 2020 May 22;17(10):3647. doi: 10.3390/ijerph17103647

Table 5.

Results of bivariate analysis between sexual behavior and mental health indicators of bivariate analysis among 9th grade adolescents in the 2015 PeNSE.

Variables Feel Alone Does Not Have More Than 1 Close Friend Have Trouble Sleeping Due to Worries
% PR p % PR p % PR p
How old were you during your first act of sexual intercourse
   15 y.o. or more 48.9 1 <0.001 13.8 1 <0.001 44.5 1 <0.001
   13 and 14 y.o. 46.1 0.94 (0.91–0.97) 11.3 0.82 (0.76–0.89) 41.8 0.94 (0.91–0.97)
   12 y.o. or less 42.7 0.87 (0.84–0.91) 13.0 0.94 (0.86–1.03) 36.1 0.81 (0.79–0.85)
Use of condom during first act of sexual intercourse
   Yes 43.9 1 <0.001 11.3 1 <0.001 39.6 1 <0.001
   No 50.9 1.16 (1.13–1.19) 14.2 1.26 (1.18–1.34) 44.6 1.13 (1.09–1.16)

PeNSE: Pesquisa Nacional de Saúde do Escolar (National School Health Survey), PR: prevalence ratio;, and CI: confidence interval.