The prevalence of and factors associated with the discordance between perceived and actual HIV risk among undergraduates in mainland China

Y: Risk discordance=1, Risk concordance=0 X1: Sexual orientation 1=Non-heterosexual men, 2=Non-heterosexual women, 3=Heterosexual men,4=Heterosexual women X2: Grade 0=Freshmen 1=Non-freshmen X3: Age at first sex (Years) 0=15 (Late) 1=14 (Early) X4: Residential areas: 0=Rural, 1=Urban X5: Major 0=Non-Medical 1=Medical X6: HIV-related knowledge 0=Low 1=High X7: HIV-related stigma 0=High 1=Low X8: Self-efficacy of condom use 0=Low 1=High X9: Testing history 0=Never 1=Ever X10: Awareness of the national AIDS policy 0=No 1=Yes