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Table 2 Univariate and multivariate models of outcome

From: Unplanned out-of-hospital birth and risk factors of adverse perinatal outcome: findings from a prospective cohort

Variables Neonatal mortality and morbidity **
(N = 106)
Safe Birth
(N = 1564)
Chi2-Pearson
p-value
Univariate Logistic Regression
Odds-Ratio [CI 95%]
Multivariate Logistic Regression
Adjusted Odds-Ratio
[CI 95%]
P-value
Time of call * 34.3% (34/99) 31.6% (451/1427) 0.57    
Time of unit intervention * 37.1% (39/105) 34.1% (513/1503) 0.53    
Time of unit reaching the hospital (ie. > 30 min)* 21% (19/91) 19% (263/1417) 0.58    
Non-French speaking 8.6% (9/104) 12.0% (184/1535) 0.31    
Unhealthy housing 17.0% (14/82) 9.0% (113/1266) 0.02 2.1 [1.1–3.9]   
Multiple pregnancy 5.6% (6/108) 0.5% (7/1557) < 0.0001 13.2 [4.4–40] 70.7 [4.7–1062] 0.002
Primiparity 35.0% (37/106) 12.0% (179/1548) < 0.0001 4.1 [2.7–6.3]   
Intercurrent midwife or physician consultation 9.3% (10/108) 2.9% (46/1560) < 0.001 3.4 [1.7–7]   
Conform antenatal care 81.1% (86/106) 94.2% (1451/1540) < 0.0001 0.3 [0.2–0.4]   
Midwife consultation in the last 24 h 12.0% (11/93) 24.0% (333/1370) 0.006 0.4 [0.2–0.8]   
Older maternal age * 7.0% (34/106) 6.2% (65/1041) 0.57    
Fetal pathology 5.7% (6/106) 0.7% (10/1548) < 0.0001 9.2 [3.2–26]   
Prematurity (ie. < 37 weeks of gestational age) 36.0% (38/105) 4.0% (60/1455) < 0.0001 34.7 [19–63.5] 6.7 [2.1–21.4] 0.001
Maternal pathology 50.0% (53/106) 20.0% (314/1540) < 0.0001 9.1 [3.3–25.7] 2.8 [1.0–7.5] 0.047
Breech presentation 7.0% (6/86) 1.4% (21/1493) < 0.001 5.4 [2.1–13.7]   
Cord prolapse 15.4% (12/78) 18.9% (230/1217) 0.44    
Meconium-stained amniotic fluid 24.0% (15/63) 14.0% (123/886) 0.03 1.9 [1.1–3.6]   
Hypothermia 35.9% (19/53) 20.6% (184/892) < 0.001 2.2 [1.2–3.9] 2.8 [1.1–7.6] 0.039
  1. *Defined by extreme population tercile T3 versus T1+; ** Defined as death or neonatal intensive care unit hospitalization at Day 7; NICU: neonatal intensive care unit; CI 95%: confidence interval 95%