Table 3 Adjusted odds ratios (95% confidence interval) for outcomes stratified by fetal sex

Total live births

704,523

643,149

704,523

643,149

Number of cases

15,585

14,941

53,052

39,611

  < 25

1.05 (0.97, 1.15)

0.94 (0.85, 1.03)

1.04 (0.99, 1.09)

1.07 (1.02, 1.13)+

25–29 (ref)

1.00

1.00

1.00

1.00

30–34

1.04 (0.99, 1.10)

0.98 (0.94, 1.03)

1.02 (0.99, 1.04)

1.04 (1.01, 1.07)+

35–39

1.10 (1.04, 1.17)+

1.08 (1.01, 1.14)+

1.07 (1.04, 1.11)+

1.11 (1.07, 1.15)+

40–44

1.30 (1.20, 1.40)+

1.24 (1.15, 1.34)+

1.17 (1.12, 1.22)+

1.22 (1.16, 1.28)+

45–49

1.42 (1.26, 1.60)+

1.44 (1.28, 1.62)+

1.22 (1.14, 1.31)+

1.29 (1.19, 1.40)+

  ≥ 50

1.55 (1.26, 1.90)+

1.67 (1.37, 2.03)+

1.29 (1.14, 1.45)+

1.51 (1.32, 1.71)+

  < 20

0.87 (0.75, 1.01)

0.93 (0.80, 1.08)

1.32 (1.23, 1.41)+

1.21 (1.11, 1.31)+

20–24

0.92 (0.86, 0.98)+

0.87 (0.82, 0.93)+

0.99 (0.96, 1.02)

1.02 (0.98, 1.05)

25–29 (ref)

1.00

1.00

1.00

1.00

30–34

1.18 (1.13, 1.23)+

1.21 (1.16, 1.27)+

1.08 (1.06, 1.11)+

1.11 (1.08, 1.14)+

35–39

1.54 (1.45, 1.64)+

1.68 (1.58, 1.79)+

1.33 (1.28, 1.37)+

1.35 (1.30, 1.41)+

  ≥ 40

2.21 (1.99, 2.45)+

2.46 (2.21, 2.73)+

1.63 (1.52, 1.74)+

1.80 (1.67, 1.94)+