搜索结果: 1-3 共查到“人口统计学 1988”相关记录3条 . 查询时间(0.173 秒)
Increased Condom Use Among Teenage Males, 1988-1995：The Role of Attitudes
Condom Use 1988-1995 Teenage Males
2009/9/14
Context: Understanding whether and to what degree changes in young men's attitudes explain increases in condom use over time can be useful in developing more effective disease prevention strategies.
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Intention Status of U.S. Births in 1988：Differences by Mothers' Socioeconomic and Demographic Characteristics
U.S. Births Demographic Characteristics Socioeconomic
2009/9/11
The National Maternal and Infant Health Survey provides new data on the prevalence of unintended childbearing in the United States: Thirty-six percent of births in 1988 were mistimed and 7% were unwan...
The 1988 Viet Nam Survey was the first country-wide demographic survey of Viet Nam. The results suggest that the goal of a population growth rate of 1.7 per cent by 1990 is not likely to be achieved, ...