The Impact of Breastfeeding Pattern on the Duration of Lactational Amenorrhoea in Chengdu, China  

作　　者：崔念 唐光华 李民享 WHO Task Force on Methods for the Natural Regulation of Fertility 

机构地区：[1]Family Planning Research Institute of Sichuan, Chengdu 610041,China [2]United Nations Development Programme/World Health Organization/World Bank Special Programme of Research Development and Research Training in Human Reproduction World Health Organization, 1211 Geneva 27, Switzerland

出　　处：《Journal of Reproduction and Contraception》2002年第2期98-109,共12页生殖与避孕（英文版）

基　　金：This study was supported by the UNDP/UNFPA/WHO/World Bank Special Programme of Research,Development and Research Training in Human Reproduction;World Health Organization

摘　　要：Objective To determine the relation between infant feeding practices (and other factors) and the duration of postpartum amenorrhoea in a sample of Chinese women Subjects &. Methods Infant feeding and the return of menses were measured longitudinally in 541 mothers and their infants in Pengxian County, Sichuan Province. The durations of breastfeeding and of lactational amenorrhoea were estimated through survival analysis. Cox's non-parametric hazards regression analysis was performed to determine the variables associated with the duration of lactational amenorrhoea. Results Mothers breastfed frequently per day, the mean frequency ranging from 6. 4 per day at 3 weeks postpartum to 5. 4 per day at 6 months. They breastfed for over 18. 3 months on average. The median duration of lactational amenorrhoea was 9. 5 months. The period from birth until the first breastfeed was a significant determinant of the duration of lactational amenorrhoea, P = 0. 038. Compared with women who ended full breastfeeding earlier, those who ceased full breastfeeding at 120 to 24C days returned to menses significantly sooner (risk ratio = 1. 34; 95% CI = 1. 06-1. 69). This finding is probably spurious since no relationship between full breastfeeding duration and the return of menses was found among women -who ended full breastfeeding after 240 days. Conclusion The most important determinant of the return of menses was the delay in the first breastfeed after birth, suggesting that the Ten Steps to Successful Breastfeeding should be more precisely implemented.Objective To determine the relation between infant feeding practices (and other factors) and the duration of postpartum amenorrhoea in a sample of Chinese women Subjects &. Methods Infant feeding and the return of menses were measured longitudinally in 541 mothers and their infants in Pengxian County, Sichuan Province. The durations of breastfeeding and of lactational amenorrhoea were estimated through survival analysis. Cox's non-parametric hazards regression analysis was performed to determine the variables associated with the duration of lactational amenorrhoea. Results Mothers breastfed frequently per day, the mean frequency ranging from 6. 4 per day at 3 weeks postpartum to 5. 4 per day at 6 months. They breastfed for over 18. 3 months on average. The median duration of lactational amenorrhoea was 9. 5 months. The period from birth until the first breastfeed was a significant determinant of the duration of lactational amenorrhoea, P = 0. 038. Compared with women who ended full breastfeeding earlier, those who ceased full breastfeeding at 120 to 24C days returned to menses significantly sooner (risk ratio = 1. 34; 95% CI = 1. 06-1. 69). This finding is probably spurious since no relationship between full breastfeeding duration and the return of menses was found among women -who ended full breastfeeding after 240 days. Conclusion The most important determinant of the return of menses was the delay in the first breastfeed after birth, suggesting that the Ten Steps to Successful Breastfeeding should be more precisely implemented.

关 键 词：BREASTFEEDING FERTILITY China infant feeding AMENORRHOEA 

分 类 号：R174.4[医药卫生—妇幼卫生保健]