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Table 1 Association of haemoglobin at birth and maternal and infant characteristics (n = 890)

From: Haemoglobin level at birth is associated with short term outcomes and mortality in preterm infants

Characteristics (number)   Mean (95% CI) Hb at birth (g/dL) P value
Sex Male (450) 15.9 (15.7–16.2) 0.129
Female (440) 15.7 (15.4–15.9)  
Ethnicity Caucasian (319) 16.3 (15.9–16.7) <0.01
Black (331) 15.2 (14.9–15.5)  
Asian (129) 15.6 (15.1–16.1)  
Mixed (111) 16.3 (15.9–16.8)  
Type of delivery Vaginal (362) 15.3 (15.0–15.6) <0.01
Caesarean (527) 16.2 (15.9–16.4)  
Foetal distress Yes (107) 14.6 (14.1–15.1) <0.01
No (777) 16.0 (15.8–16.1)  
Antepartum haemorrhage Yes (234) 15.2 (14.9–15.6) <0.01
No (656) 16.0 (15.8–16.2)  
Chorioamnionitis Yes (252) 15.2 (14.9–15.6) <0.01
No (638) 16.0 (15.8–16.2)  
Pre-eclamptic toxemia Yes (261) 16.0 (15.6–16.3) <0.01
No (624) 15.7 (15.5–15.9)