Outcome | Perinatal death [n = 548(%)] | Crude RR | P-value |
---|---|---|---|
Yes/No (%) | (95%CI) | ||
Mean fetal weight (Kg) | – | 0.95 (0.52–1.71) | 0.844 |
 <  2.5 | 2/14 (14.3) | 1.36 (0.36–5.16) | 0.660 |
 2.5–3.5 | 34/335 (61) | 1 | – |
 >  3.5 | 20/143 (14) | 1.33 (0.79–2.24) | 0.970 |
Cord blood lactate at birth, mmol/L | |||
 Umbilical arterya | – | 1.19 (1.15–1.24) | <  0.001 |
  Normal lactate (<=4.8) | 1/110 (0.9) | 1 | – |
  High lactate (>  4.8) | 55/382 (14.4) | 13.97 (1.95–100.03) | 0.006 |
 Umbilical veina | – | 1.24 (1.18–1.30) | <  0.001 |
  Normal lactate (<=4.8) | 1/132 (0.8) | 1 | – |
  High lactate (>  4.8) | 55/360 (15.3) | 17.6 (2.46–126.4) | 0.003 |
One-minute Apgar Score | |||
 Normal (> =7) | 4/90 (4.4) | 1 | – |
 Abnormal (<  7) | 52/402 (12.9) | 37.17 (13.68–101.01 | <  0.001 |
Five-minute Apgar score | |||
 Normal (> =7) | 6/481 (1.2) | 1 | – |
 Abnormal (<  7) | 50/11 (454) | 66.53 (29.76–148.75) | <  0.001 |