Abstract：The data of twins birth among urban, town and rural women in the year 1989 in China were utilized to analyze the effects of socioeconomic status on the birth rates of DZ and MZ twins at different maternal ages, the zygosity of the twins was computed in accord to Weinberg's different methods. The results showed that the hignest birth rate of DZ twins was in town at all maternal ages, and the lowest was in rural at most maternal ages. The changing models of the birth rates of DZ twins with maternal age were similar before the age group of 30~34, but different later among the three population, especially between rural and the other two populations at elder age groups. It was generally considered that the birth rate of MZ twin was rarely affected by environmental factors, but this paper found that the birth rate of MZ twins might be influenced by elder maternal age (above 30~34 year old) and the maternal socioeconomic status at elder age.
收稿日期: 2003-02-25
引用本文:
干建平,蔡三元. 社会经济状况对中国不同卵性类型双生子出生率的影响[J]. , 2003, 42(2): 0-0.
干建平,蔡三元. The effects of socioeconomic status on twin birth rate in China. , 2003, 42(2): 0-0.
