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Table 1 Demographic and clinical characteristics of maternities with postpartum haemorrhage by transfusion and haemoglobin concentration prior to transfusion

From: Haemoglobin concentration following postpartum haemorrhage and the association between blood transfusion and breastfeeding: a retrospective cohort study

  Transfusion No transfusion
Haemoglobin < 70 g/L Haemoglobin 70–90 g/L Haemoglobin > 90 g/L
n col%a n col%a n col%a n col%a
Maternities 686   792   350   13,623  
Maternal age
 19 and under 29 4.2 28 3.5 8 2.3 285 2.1
 20–34 550 80.2 629 79.4 266 76.0 10,715 78.7
 35 and over 107 15.6 135 17.0 76 21.7 2622 19.2
Country of birth
 Australia 394 57.4 526 66.4 223 63.7 7987 58.6
 Asia 165 24.1 146 18.4 61 17.4 2718 20.0
 Other and not stated 127 18.5 120 15.2 66 18.9 2918 21.4
Parity
 Primipara 424 61.8 427 53.9 159 45.4 6611 48.5
 1–2 previous births 203 29.6 290 36.6 157 44.9 5696 41.8
 3+ previous births 58 8.5 73 9.2 34 9.7 1303 9.6
Hypertension 94 13.7 92 11.6 54 15.4 1191 8.7
Diabetes 47 6.9 46 5.8 30 8.6 1093 8.0
Smoked during pregnancy 98 14.3 118 14.9 47 13.4 1624 11.9
Private patient 69 10.1 96 12.1 42 12.0 1472 10.8
Analgesia—spinal/epidural 320 46.6 352 44.4 139 39.7 5497 40.4
Analgesia—general anaesthetic 139 20.3 158 19.9 83 23.7 942 6.9
Analgesia—opioid 170 24.8 192 24.2 70 20.0 2967 21.8
Delivery mode
 Vaginal (including breech) 386 56.3 434 54.8 207 59.1 8694 63.8
 Instrumental birth 189 27.6 183 23.1 62 17.7 2376 17.4
 Caesarean—labour 76 11.1 121 15.3 49 14.0 1574 11.6
 Caesarean—no labour 35 5.1 53 6.7 32 9.1 957 7.0
Maternal morbidity 39 5.7 45 5.7 26 7.4 117 0.9
Placenta praevia/accreta 29 4.2 41 5.2 32 9.1 222 1.6
Estimated gestational age (weeks)
 37–38 148 21.6 149 18.8 86 24.6 2567 18.8
 39–40 364 53.1 439 55.4 177 50.6 7795 57.2
 41+ 174 25.4 204 25.8 87 24.9 3261 23.9
Large for gestational age 96 14.0 131 16.5 54 15.4 2012 14.8
Small for gestational age 42 6.1 47 5.9 25 7.1 963 7.1
Resuscitated 67 9.8 81 10.2 43 12.3 1102 8.1
Apgar score < 7 at 5 min 13 1.9 15 1.9 9 2.6 200 1.5
Transfer of baby 9 1.3 13 1.6 10 2.9 311 2.3
Admitted to SCN or NICU 125 18.2 153 19.3 80 22.9 1898 13.9
Breastfeeding at discharge  
 No breastfeeding 147 21.4 148 18.7 67 19.1 1761 12.9
 Exclusive 447 65.2 562 71.0 235 67.1 10,740 78.8
 Partial 92 13.4 82 10.4 48 13.7 1122 8.2
 Any 539 78.6 644 81.3 283 80.9 11,862 87.1
Hospital group  
 NICU or CPAP 473 69.0 510 64.4 183 52.3 9404 69.0
 Urban 112 16.3 117 14.8 56 16.0 2165 15.9
 Regional 101 14.7 165 20.8 111 31.7 2054 15.1
  1. NICU neonatal intensive care unit, CPAP continuous positive airway pressure; SCN special care nursery
  2. aPercentages may not sum to 100% due to missing values