Measuring trends in age at first sex and age at marriage in Manicaland, Zimbabwe
Measuring trends in age at first sex and age at marriage in Manicaland, Zimbabwe
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DOI：
10.1136/sti.2008.033431
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发表时间：
2009-04-01
影响因子：
3.6
通讯作者：
Gregson, S.
中科院分区：
文献类型：
--
作者：
Cremin, I.;Mushati, P.;Gregson, S.
目的：为了确定报告的偏见，并确定不一致的报告所观察到的趋势的时间在第一次性别和年龄在marriage.Methods：从三轮的人口为基础的队列在津巴布韦东部的纵向数据的影响进行了分析。根据一致性对参加多轮会议的6837人的首次性行为年龄和结婚年龄的报告进行了分类。生存分析被用来确定的第一次性行为和marriage.Results的时间趋势：在这个人群中，女性开始性行为，并进入婚姻在年轻的年龄比男性，但花更少的时间之间的第一次性行为和婚姻。在1998年至2005年接受调查的人中，15至54岁的男子第一次性行为和初婚的年龄中位数分别为18.5岁和21.4岁，妇女分别为18.2岁和18.5岁。在参加多次调查的人中，第一次性行为的年龄和结婚年龄的报告水平很高，被认为是不可靠的。从这些分析中排除被确定为不可靠的报告并没有改变观察到的第一次性行为年龄或结婚年龄的趋势。随着年龄的增长追踪出生队列揭示了报告偏见，特别是在最年轻的队列中。出生队列的比较，跨越一个时期的>40年，表明第一次性行为的中位年龄一直保持不变，随着时间的推移，妇女，但已逐渐下降的mesen.Conclusions：虽然许多报告的年龄在第一次性行为和结婚年龄被认为是不可靠的，列入这些报告并没有导致人工生成或抑制的趋势。
Objective: To identify reporting biases and to determine the influence of inconsistent reporting on observed trends in the timing of age at first sex and age at marriage.Methods: Longitudinal data from three rounds of a population-based cohort in eastern Zimbabwe were analysed. Reports of age at first sex and age at marriage from 6837 individuals attending multiple rounds were classified according to consistency. Survival analysis was used to identify trends in the timing of first sex and marriage.Results: In this population, women initiate sex and enter marriage at younger ages than men but spend much less time between first sex and marriage. Among those surveyed between 1998 and 2005, median ages at first sex and first marriage were 18.5 years and 21.4 years for men and 18.2 years and 18.5 years, respectively, for women aged 15-54 years. High levels of reports of both age at first sex and age at marriage among those attending multiple surveys were found to be unreliable. Excluding reports identified as unreliable from these analyses did not alter the observed trends in either age at first sex or age at marriage. Tracing birth cohorts as they aged revealed reporting biases, particularly among the youngest cohorts. Comparisons by birth cohorts, which span a period of >40 years, indicate that median age at first sex has remained constant over time for women but has declined gradually for men.Conclusions: Although many reports of age at first sex and age at marriage were found to be unreliable, inclusion of such reports did not result in artificial generation or suppression of trends.