The 2004 China Female Sex Survey is being organized by the Chinese Institute of Sexology and the Chinese Medical Association via the popular Internet site Sina.com, Xinhua news agency said on Tuesday.

Women aged 21 and over can log on to the site to respond to 34 questions such as "How often do you have sex per month and how many times to you expect to have sex in a month?," "Do you get pleasure in sex?" and "Have you ever had extramarital affairs?."

"The aim of the survey is to find out the status of Chinese women's sex life, analyze their sexual behavior and psychology and provide sexual knowledge and advice," Ma Xiaonian, a sexology expert with the institute, was quoted as saying by Xinhua.

Ma conducted a smaller survey a decade ago and concluded that 50 percent of Chinese women did not experience orgasm during sex, it said.

Attitudes toward sex relaxed after China began Western-style market reforms in 1978, unleashing a boom in adolescent dating, adultery, prostitution and other kinds of promiscuity which the Communist Party has blamed on liberal bourgeois mores imported from the West.

In a separate survey, it was found that 91 percent of women say sex discrimination is present in the workplace, Xinhua said.

An online survey conducted by China91.com found that about 40 percent of more than 2,000 men and women surveyed believed that women had an inferior status in work life, it said.

"The most common type of discrimination listed was employers' interference in marriage, pregnancy and maternity leave of female employees," Xinhua said.