Supplementary Figure 3.

Coefficients (b) for the associations of sexual frequency with gender (female vs male) (A), sexual communication (seldom vs sometimes) (B), sexual communication (frequently vs sometimes) (C), and sexual repression (yes vs no) (D) across the quantile levels of sexual frequency, respectively. The coefficients indicate the change in sexual frequency with 1-U increase in A, B, C, and D, respectively. Black line represent the estimated coefficients and the grey area represents 95% CI of the corresponding parameters calculated by QR model. Red solid line represents the estimated coefficients and two red dot lines represent 95% CI of each variables calculated by NB model. All coefficients and 95% CI were adjusted for demographic, socioeconomic and epidemiological characteristics.