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Couples’ prepregnancy body mass index and time to pregnancy among those attempting to conceive their first pregnancy
Fertility and Sterility ( IF 6.7 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.fertnstert.2020.05.041
Yue Zhang , Junhui Zhang , Jun Zhao , Xiang Hong , Hongguang Zhang , Qiaoyun Dai , Yuanyuan Wang , Xueying Yang , Qiaomei Wang , Haiping Shen , Zuoqi Peng , Ya Zhang , Daxun Qi , Ying Yang , Yiping Zhang , Donghai Yan , Xu Ma

OBJECTIVE To explore the relationship between couples' prepregnancy body mass index (BMI) and time to pregnancy (TTP) among those with no prior gravidity. DESIGN Retrospective cohort study. SETTING Local maternal/child health care or family-planning service institutions. PATIENT(S) A total of 2,301,782 eligible couples participating in the National Free Preconception Check-up Projects from January 1, 2015 to December 31, 2017. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Time to pregnancy. RESULT(S) Underweight, overweight, or obese status in women and underweight status in men were associated with couples' prolonged TTP. The optimal BMI levels were 20.61-23.06 kg/m2 and 22.69-27.74 kg/m2 for women and men, respectively. Compared with couples in whom both partners had a normal BMI, the pregnancy rates were reduced by 10% (fecundability odds ratio [FOR] 0.90; 95% confidence interval [CI], 0.88-0.92) and 19% (FOR 0.81; 95% CI, 0.78-0.84) for couples in whom both partners were underweight or obese, respectively. The combination of women with a normal BMI and overweight men had the greatest fertility (FOR 1.03; 95% CI, 1.02-1.03), and the combination of obese women and underweight men had the lowest fertility (FOR 0.70; 95% CI, 0.65-0.76). CONCLUSION(S) Abnormal prepregnancy BMIs in either women or men were associated with prolonged TTP among couples with no prior gravidity. Scientific management of couples' prepregnancy BMI could improve their fertility.

中文翻译:

试图怀孕第一次怀孕的夫妇的孕前体重指数和怀孕时间

目的 探讨无既往妊娠夫妇孕前体重指数(BMI)与妊娠时间(TTP)的关系。设计 回顾性队列研究。设置当地妇幼保健或计划生育服务机构。患者 2015 年 1 月 1 日至 2017 年 12 月 31 日期间,共有 2,301,782 对符合条件的夫妇参加了全国免费孕前检查项目。干预(S) 无。主要结局指标 怀孕时间。结果 女性体重不足、超重或肥胖状态以及男性体重不足状态与夫妻的 TTP 延长有关。女性和男性的最佳 BMI 水平分别为 20.61-23.06 kg/m2 和 22.69-27.74 kg/m2。与夫妻双方 BMI 均正常的夫妻相比,夫妻双方的妊娠率降低了 10%(生育能力比值比 [FOR] 0.90;95% 置信区间 [CI],0.88-0.92)和 19%(FOR 0.81;95% CI,0.78-0.84)分别是体重不足或肥胖。BMI 正常的女性和超重男性的组合生育率最高(FOR 1.03;95% CI,1.02-1.03),肥胖女性和体重不足男性的组合生育率最低(FOR 0.70;95% CI,0.65) -0.76)。结论 (S) 女性或男性的异常孕前 BMI 与之前没有怀孕的夫妇的 TTP 延长有关。夫妇孕前BMI的科学管理可以提高他们的生育能力。BMI 正常的女性和超重男性的组合生育率最高(FOR 1.03;95% CI,1.02-1.03),肥胖女性和体重不足男性的组合生育率最低(FOR 0.70;95% CI,0.65) -0.76)。结论 (S) 女性或男性的异常孕前 BMI 与之前没有怀孕的夫妇的 TTP 延长有关。夫妇孕前BMI的科学管理可以提高他们的生育能力。BMI 正常的女性和超重男性的组合生育率最高(FOR 1.03;95% CI,1.02-1.03),肥胖女性和体重不足男性的组合生育率最低(FOR 0.70;95% CI,0.65) -0.76)。结论 (S) 女性或男性的异常孕前 BMI 与之前没有怀孕的夫妇的 TTP 延长有关。夫妇孕前BMI的科学管理可以提高他们的生育能力。
更新日期:2020-11-01
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