sexual attitudes

To identify risk factors,which include demographic characteristics,population- specific behavior characteristics,sexual attitudes,and related knowledge among the four groups.6.
5.研究上述四類人群危險(xiǎn)性性行為發(fā)生的主要影響因素,包括社會(huì)人口學(xué)因素,行為特征因素,性態(tài)度開(kāi)放程度,AIDS/STD相關(guān)知識(shí)等。