| Singleton delivery | Multiple deliveries | All deliveries | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Intact embryo group (n = 2187) | Blastomere loss group (n = 332) | OR (95% CI) | aOR (95% CI)a | Intact embryo group (n = 1559) | Blastomere loss group (n = 151) | OR (95% CI) | aOR (95% CI)a | Intact embryo group (n = 3746) | Blastomere loss group (n = 483) | OR (95% CI) | aOR (95% CI)a |
No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | No. (%) | |||||||
Gestational age, Mean (SD), years | 38.13 (1.76) | 38.33 (1.83) | Â | Â | 35.78 (2.04) | 36.09 (2.23) | Â | Â | 37.14 (2.22) | 37.63 (2.22) | Â | Â |
Sex (Female) | 1040 (47.6) | 172 (51.8) | 1.19 (0.94–1.49) | 1.21 (0.95–1.55) | 767 (49.2) | 77 (51.0) | 1.07 (0.77–1.50) | 1.02 (0.72–1.44) | 1807 (48.2) | 249 (51.6) | 1.14 (0.94–1.38) | 1.13 (0.93–1.38) |
Birthweight | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
  < 2500 g | 115 (5.3) | 20 (6.0) | 1.16 (0.71–1.90) | 1.42 (0.76–2.66) | 757 (48.4) | 81 (53.6) | 1.23 (0.88–1.72) | 1.07 (0.71–1.61) | 870 (23.2) | 101 (20.9) | 0.89 (0.70–1.12) | 0.87 (0.64–1.19) |
  > 4000 g | 219 (10.0) | 35 (10.5) | 1.07 (0.73–1.56) | 1.08 (0.72–1.62) | 1 (0.1) | 0 (0.0) | NA | NA | 220 (5.9) | 35 (7.3) | 1.22 (0.84–1.77) | 1.28 (0.86–1.92) |
Birthweight for gestational age | ||||||||||||
 SGA | 65 (3.0) | 16 (4.8) | 1.61 (0.92–2.83) | 1.84 (0.99–3.37) | 285 (18.3) | 41 (27.2) | 1.64 (1.12–2.41) | 1.50 (1.00–2.25) | 350 (9.3) | 57 (10.6) | 1.29 (0.96–1.75) | 1.14 (0.83–1.56) |
 LGA | 376 (17.2) | 49 (14.8) | 0.85 (0.62–1.18) | 0.80 (0.57–1.13) | 42 (2.7) | 2 (1.3) | 0.54 (0.13–2.28) | 0.44 (0.10–1.90) | 418 (11.2) | 51 (11.8) | 0.97 (0.71–1.32) | 0.91 (0.66–1.26) |
Apgar ≤ 7 (1 min) | 30 (1.4) | 7 (2.1) | 1.55 (0.68–3.56) | 2.52 (0.99–6.39) | 43 (2.8) | 5 (3.3) | 1.21 (0.47–3.10) | 1.80 (0.63–5.15) | 73 (2.0) | 12 (2.5) | 1.28 (0.69–2.38) | 1.39 (0.73–2.64) |
Apgar ≤ 7 (5 min) | 12 (0.6) | 3 (0.9) | 1.65 (0.46–5.88) | 4.22 (0.97–18.44) | 19 (1.2) | 2 (1.3) | 1.09 (0.25–4.73) | 1.55 (0.29–8.26) | 31 (0.8) | 5 (1.0) | 1.25 (0.48–3.24) | 2.76 (0.94–8.13) |
Neonatal respiratory distress | ||||||||||||
 TTN | 13 (0.6) | 6 (1.8) | 3.07 (1.16–8.13) | 6.27 (1.86–21.14) | 33 (2.1) | 8 (5.3) | 2.60 (1.17–5.74) | 5.21 (1.90–14.27) | 46 (1.2) | 14 (2.9) | 2.38 (1.30–4.36) | 5.21 (2.42–11.22) |
 RDS | 41 (1.9) | 5 (1.5) | 0.82 (0.32–2.08) | 1.11 (0.38–3.29) | 134 (8.6) | 13 (8.6) | 1.04 (0.57–1.89) | 0.77 (0.37–1.60) | 181 (4.7) | 18 (3.7) | 0.80 (0.49–1.32) | 0.91 (0.49–1.67) |
Congenital anomalyb | 6 (0.3) | 2 (0.6) | 2.20 (0.44–10.96) | 1.98 (0.35–11.17) | 14 (0.9) | 1 (0.7) | 0.73 (0.10–5.65) | 0.57 (0.06–5.17) | 20 (0.5) | 3 (0.6) | 1.16 (0.34–3.94) | 1.18 (0.32–4.31) |
Neonatal mortality c | 2 (0.1) | 1 (0.3) | 3.30 (0.30–36.50) | NA | 6 (0.4) | 0 (0.0) | NA | NA | 8 (0.2) | 1 (0.2) | 0.97 (0.12–7.78) | 1.36 (0.10–11.00) |