Figure 1.
Flow chart of the literature selection process.
Figure 2.
Trend analyses of indicators of high-risk sexual behavior in the floating population in China.
(a) proportion that engaged in premarital sex; (b) proportion that engaged in commercial sex; (c) proportion that engaged in sex with multiple partners; (d) proportion that used condoms with casual or commercial sex partners; (e) prevalence of STIs. The dashed lines indicate the average trends calculated by generalized linear mixed model. Detailed information about the parameters of the dashed lines is given in File S4.
Figure 3.
Trend analyses of indicators of high-risk sexual behavior in college student population in China.
(a) proportion that engaged in premarital sex; (b) proportion that engaged in sex with multiple partners; (c) proportion that used condoms. The dashed lines indicate the average trends calculated by generalized linear mixed model. Detailed information about the parameters of the dashed lines is given in File S4. The grey dots (b & c) represent studies among migrant truck drivers that were not included in the average trend analysis.
Figure 4.
Trend analyses of indicators of high-risk sexual behavior in young, out-of-school individuals and community residents in China.
(a) proportion that engaged in commercial sex among the community residents; (b) proportion that engaged in sex with multiple partners among community residents; (c) proportion that engaged in premarital sex among the out-of-school youth; (d) prevalence of STIs. The connected dots indicate longitudinal studies. The dashed lines indicate the average trends across the years. Detailed information about the parameters of the dashed lines was given in File S4. The grey dot (b) represents an outlier study that was not included in the average trend analysis.