Table 3

Maternal and neonatal outcomes for women with chorioamnionitis (histological or clinical)

OutcomesNo of studyNo of the patientsEffectCertainty
ACSNon-ACSOR (95% CI)Absolute (95% CI)
Maternal outcomes (histological chorioamnionitis)
 Caesarean section142/97 (43.3%)2/12 (16.7%)3.82 (0.79 to 18.36)266 fewer per 1000 (from 30 fewer to 619 more)Very low
 Gestational diabetes mellitus16/97 (6.2%)2/12 (16.7%)0.33 (0.06 to 1.86)105 fewer per 1000 (from 155 fewer to 104 more)Very low
 Pre-eclampsia or eclampsia15/97 (5.2%)1/12 (8.3%)0.60 (0.06 to 5.59)32 fewer per 1000 (from 78 fewer to 254 more)Very low
Neonatal outcomes (histological chorioamnionitis)
 Neonatal death663/677 (9.3%)87/516 (16.9%)0.51 (0.31 to 0.85)75 fewer per 1000 (from 109 fewer to 22 fewer)Low
 Severe IVH425/414 (6.0%)13/114 (11.4%)0.41 (0.19 to 0.87)64 fewer per 1000 (from 90 fewer to 13 fewer)Low
 IVH542/502 (8.4%)26/156 (16.7%)0.41 (0.23 to 0.72)91 fewer per 1000 (from 123 fewer to 41 fewer)Low
 RDS6305/677 (45.1%)289/516 (56.0%)0.59 (0.45 to 0.77)131 fewer per 1000 (from 196 fewer to 65 fewer)Low
 Sepsis6112/677 (16.5%)83/516 (16.1%)1.03 (0.73 to 1.47)4 more per 1000 (from 38 fewer to 59 more)Very low
Neonatal outcomes (clinical chorioamnionitis)
 Neonatal death214/109 (12.8%)14/81 (17.3%)0.71 (0.32 to 1.60)44 fewer per 1000 (from 110 fewer to 78 more)Very low
 Severe IVH35/163 (3.1%)14/155 (9/0%)0.32 (0.03 to 3.19)60 fewer per 1000 (from 87 fewer to 150 more)Very low
 IVH313/163 (8.0%)20/155 (12.9%)0.43 (0.07 to 2.44)69 fewer per 1000 (from 119 fewer to 136 more)Very low
 RDS499/209 (47.45)99/208 (47.6%)0.74 (0.48 to 1.12)74 fewer per 1000 (from 172 fewer to 28 more)Very low
 Sepsis226/104 (25.0%)12/46 (26.1%)0.71 (0.13 to 3.89)60 fewer per 1000 (from 271 fewer to 318 more)Very low
  • There was no maternal outcome in clinical chorioamnionitis.

  • ACS, antenatal corticosteroid; IVH, intraventricular haemorrhage ; RDS, respiratory distress syndrome.