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Table 3 Multivariable logistic regression analysis of paternal age and fertilization methods with SSR

From: Associated factors of secondary sex ratio of offspring in assisted reproductive technology: a cross-sectional study in Jilin Province, China

Variables OR 95%CI P
Paternal age group
 20 ~ 29 1.000   
 30 ~ 39 1.020 0.850–1.223 0.833
 40 ~ 49 1.220 0.894–1.665 0.209
 50 ~ 59 0.298 0.082–1.079 0.065
Fertilization methods
 IVF 1.000   
 ICSI 0.808 0.681–0.958 0.014
 R-ICSI 1.261 0.924–1.721 0.143