Never-married women have been regularly excluded in official national
surveys of fertility in China, even in light of evidence of increasing
premarital sexual activity. Likewise, never-married women in the Unit
ed States were consistently excluded from national fertility surveys p
rior to 1982 because of the perceived sensitivity of questions about c
ontraceptive use and sexual activities. Data on sexual fertility behav
ior from all women of reproductive age, regardless of marital status,
can provide direct measures of sexual activity and unintended pregnanc
ies, as well as facilitate modeling of social networks underlying the
sexual transmission of diseases. China's need for such information, ho
wever sensitive, will become more difficult to ignore given increasing
pressures to attend to the health needs of their never-married but se
xually active population.