Coitus, the most intimate sexual behavior, was chosen as the dependent variable to examine the association between traditional Confucian values and sexual activity. Table 5 presents the adjusted hazard ratios (HRa) of having had sexual intercourse by these four aspects of traditional concepts controlling for economic status, school status, education level and residence. Male adolescents and young adults in Hanoi with more traditional views on any of the four values are less likely to have engaged in premarital intercourse (HRa ranging from 0.33
0.76). Females in Hanoi with more traditional attitudes to family concept and sexual values were also less likely to have premarital sex.