Table 3 Contralateral ovulation (LR + RL) and ipsilateral ovulation (RR + LL) in two consecutive menstrual cycles of infertile women, mean ages at conception and associated offspring sex ratios
From: Ovulation patterns affect the offspring sex ratios and change with the women’s age
Ovulation pattern | Mean age | No | Male/female | Sex ratio | OR 95% CI | P-value |
|---|---|---|---|---|---|---|
C(LR + RL) | 32.4 ± 4.0$ | 373 | 215/158 | 1.361 | 1.00 control | |
I(RR + LL) | 33.2 ± 4.2$ | 284 | 138/146 | 0.945 | 0.69 0.51–0.95 | 0.0222 |
Total | 32.8 ± 4.1 | 657 | 353/304 | 1.161 |