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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