Department of Statistics, Woldia University, Woldia, Ethiopia.
Department of Statistics, Bahir Dar University, Bahir Dar, Ethiopia.
BMC Womens Health. 2021 Jan 30;21(1):45. doi: 10.1186/s12905-021-01190-y.
Both short and long birth intervals are associated with many risk factors and about 29% of births are short birth intervals in Ethiopia. The purpose of this study is to model the birth intervals of adult women aged 15-49 years using accelerated failure time and shared frailty models in order to analyze the birth intervals of Ethiopian women.
The data was obtained from the 2016 Ethiopian Demographic and Health Survey (EDHS). Accelerated failure time with different baseline and shared frailty models are used for the analysis to identify important demographic and socio-economic factors affecting the length of birth intervals and correlates of the birth intervals respectively.
The data consists of 9147 women, of which about 7842 (85.5%) are closed interval and the rest of 1323(14.5%) are open interval. Accelerated failure time (AFT) result revealed that women education level, husbands education level, age at first birth, marital status, religion and family wealth index are significant factors affecting birth interval of women in Ethiopia.
Women with closely spaced births tend to have larger family sizes when compared with women with longer inter-birth interval. Longer successive birth interval tends to reduce the total fertility rate of women. Furthermore, improvements in socio-economic status and level of education of women associate with reduced fertility, improved maternal and child wellbeing, and longer birth interval.
短生育间隔和长生育间隔都与许多风险因素有关，在埃塞俄比亚，大约 29%的分娩属于短生育间隔。本研究的目的是使用加速失效时间和共享脆弱性模型来构建 15-49 岁成年女性的生育间隔模型，以分析埃塞俄比亚女性的生育间隔。
该数据来自 2016 年埃塞俄比亚人口与健康调查（EDHS）。使用不同的基线加速失效时间和共享脆弱性模型进行分析，以确定影响生育间隔长度的重要人口和社会经济因素，以及生育间隔的相关因素。
数据包含 9147 名妇女，其中约 7842 名（85.5%）为闭合间隔，其余 1323 名（14.5%）为开放间隔。加速失效时间（AFT）结果表明，妇女的教育水平、丈夫的教育水平、首次分娩年龄、婚姻状况、宗教信仰和家庭财富指数是影响埃塞俄比亚妇女生育间隔的重要因素。
与生育间隔较长的妇女相比，生育间隔较近的妇女往往有更大的家庭规模。连续生育间隔较长往往会降低妇女的总生育率。此外，妇女社会经济地位和教育水平的提高与生育率降低、母婴健康状况改善和生育间隔延长有关。
