Table 4.
Sex ratio of the firstborn child in sRPL patients stratified according to sex of RPL patient’s older siblings.
| Only Older Brother(s) | Only Older Sister(s) | Both Older Brother(s) and Sister(s) | No Older Siblings | At Least One Older Brother | All sRPL | |
|---|---|---|---|---|---|---|
| Sex ratio of births >22 weeks a | 1.33 | 2.50 | 2.00 | 1.23 | 1.48 | 1.51 b |
| Minimum one boy, n (%) c | 34 (65.4) | 21 (72.4) | 17 (70.8) | 47 (61.0) | 51 (67.1) | 119 (65.4) |
| Minimum one girl, n (%) c | 28 (53.9) | 9 (31.0) | 10 (41.7) | 40 (52.0) | 38 (50.0) | 87 (47.8) |
a: Only RPL patients with birth of boy(s) or girl(s) only were included. b: Binomial test compared to expected 1.04 sex ratio, p = 0.026. c: % of sRPL patients.