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Table 1 Baseline characteristics of mothers in the two postdelivery groups

From: Role of days postdelivery on breast milk production: a secondary analysis from the EMPOWER trial

Characteristic 8–14 days postdelivery
N = 44
15–21 days postdelivery
N = 46
p - value
Maternal age (years) (SD) (range) 32.1 (5.7) 30.7 (6.1) 0.29
(19.7, 40.9) (19.4, 44.6)  
Self-declared ethnicity, n (%)
 Caucasian 29 (65.9%) 30 (65.2%) 0.14
 Black 2 (4.5%) 8 (17.4%)  
 Asian 10 (22.7%) 6 (13.1%)  
 Aboriginal 0 (0%) 1 (2.2%)  
 Other 3 (6.8%) 1 (2.2%)  
 Smoking prior to pregnancy, n (%) 16 (36.4%) 12 (26.7%) 0.33
 Primigravida, n (%) 17 (38.6%) 14 (30.4%) 0.41
Comorbidities, n (%) 20 (45.0%) 26 (57.0%) 0.29
 Hypertension Gestational/chronic) 4 8  
 Diabetes (Gestational/Type I and II) 5 3  
 Preterm Labour 5 7  
 Chorioamnionitis 1 2  
 Antepartum haemorrhage 7 3  
Other 9 9  
 Antenatal corticosteroids, n (%) 40 (90.9%) 36 (78.3%) 0.09
 Cesarean delivery, n (%) 24 (54.5%) 24 (52.2%) 0.82
 Singleton Pregnancy, n (%) 37 (84.1%) 40 (86.9%) 0.77
 Gestational age at delivery, mean (SD) 27.4 (1.7) 26.83 (1.6) 0.11
 Infant weight at trial entry, mean (SD) 1016 (259) 906 (229) 0.03
  1. Note: p - values were based on chi square test or Fisher exact test
  2. SD Standard deviation