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Table 3 Delivery and postpartum complications according to maternal BMI

From: Relationship between maternal body mass index with the onset of breastfeeding and its associated problems: an online survey

VariableBMI  
 Normoweight
N (%)
Overweight
n (%)
Obesity type I
n (%)
Obesity type II
n (%)
Obesity type III
n (%)
Total values
n (%)
P - value*
Uterine rupture      0.54
 No1595 (99.3)2708 (99.5)1148 (99.6)288 (98.3)95 (99.0)5834 (99.3)χ2 = 0.8
 Yes12 (0.7)14 (0.5)5 (0.4)5 (1.7)1 (1.0)37 (0.7)df = 1
Fever      <  0.001
 No1540 (95.8)2574 (94.6)1081 (93.8)275 (93.9)84 (87.5)5554 (94.6)χ2 = 12.1
 Yes67 (4.2)148 (5.4)72 (6.2)18 (6.1)12 (12.5)317 (5.4)df = 1
Preeclampsia      <  0.001
 No1577 (98.1)2654 (97.5)1103 (95.7)266 (90.8)85 (88.5)5685 (96.8)χ2 = 60.0
 Yes30 (1.9)68 (2.5)50 (4.3)27 (9.2)11 (11.5)186 (3.2)df = 1
Epidural analgesia      <  0.001
 No524 (32.6)802 (29.5)314 (27.2)66 (22.5)21 (21.9)1727 (29.4)χ2 = 19.4
 Yes1083 (67.4)1920 (70.5)839 (72.8)227 (77.5)75 (78.1)4144 (70.6)df = 1
General anaesthesia      0.09
 No1590 (98.9)2692 (98.9)1137 (98.6)285 (97.3)95 (97.3)5799 (98.8)χ2 = 2.86
 Yes17 (1.1)30 (1.1)16 (1.4)8 (2.7)1 (1.0)72 (1.2)df = 1
Induced delivery      <  0.001
 No1121 (69.8)1708 (62.7)688 (59.7)151 (51.5)52 (54.2)3720 (63.3)χ2 = 52.5
 Yes486 (30.2)1014 (37.3)465 (40.3)142 (48.5)44 (45.8)2151 (36.7)df = 1
Mode of delivery      <  0.001
 Vaginal1075 (66.9)1629 (59.8)639 (55.4)136 (46.4)47 (49.0)3526 (60.0)χ2 = 101.2
 Instrumental264 (16.4)449 (16.5)176 (15.3)46 (15.7)14 (14.6)949 (16.1)df = 1
 Planned caesarean89 (5.5)220 (8.1)108 (9.4)41 (14.0)6 (6.3)464 (7.9) 
 Emergency caesarean179 (11.1)424 (15.6)230 (19.9)70 (23.9)29 (30.2)935 (15.9) 
Episiotomy      <  0.001
 No1030 (64.1)1812 (66.6)822 (71.3)218 (74.4)74 (77.1)3956 (67.4)χ2 = 26.6
 Yes577 (35.9)910 (33.4)331 (28.7)75 (25.6)22 (22.9)1915 (32.6)df = 1
III-IV tearing      0.07
 No1589 (98.9)2689 (98.8)1136 (98.5)284 (96.9)95 (99.0)5793 (98.7)χ2 = 3.3
 Yes18 1.133 (1.2)17 (1.5)9 (3.1)1 (1.0)78 (1.3)df = 1
Composite morbidity delivery      <  0.001
 No728 (45.3)995 (36.6)336 (29.1)57 (19.5)18 (18.8)21.34 (36.7)χ2 = 128.6
 Yes879 (54.7)1727 (63.4)817 (70.9)236 (80.5)78 (81.3)3737 (63.3)df = 1
Postpartum surgery related to delivery      0.10
 No1551 (96.5)2634 (96.8)1105 (95.8)280 (95.6)90 (93.8)5660 (96.4)χ2 = 2.6
 Yes56 (3.5)88 (3.2)48 (4.2)13 (4.4)6 (6.3)211 (3.6)df = 1
Postpartum maternal ICU admission      0.43
 No1575 (98.0)2681 (98.5)1128 (97.8)285 (97.3)94 (97.9)5763 (98.2)χ2 = 0.6
 Yes32 (2.0)41 (1.5)25 (2.2)8 (2.7)2 (2.1)108 (1.83)df = 1
Readmission after discharge      0.11
 No1580 (98.3)2666 (97.9)1132 (98.2)281 (95.9)94 (97.9)5753 (98.0)χ2 = 2.6
 Yes27 (1.7)56 (2.1)21 (1.8)12 (4.1)2 (2.1)118 (2.0)df = 1
Composite postpartum morbidity      0.08
 No1507 (93.8)2558 (94.0)1071 (92.9)265 (90.4)86 (89.6)5487 (93.5)χ2 = 5.6
 Yes100 (6.2)164 (6.0)82 (7.1)28 (9.6)10 (10.4)384 (6.5)df = 1
Low birthweight      0.13
 No1488 (92.7)2560 (94.3)1076 (93.4)271 (93.1)95 (99.0)5490 (93.5)χ2 = 2.3
 Yes118 (7.3)155 (5.7)76 (6.6)20 (6.9)1 (1.0)370 (6.5)df = 1
Macrosomia      <  0.001
 No1561 (97.2)2608 (96.1)1072 (93.1)267 (91.8)81 (84.4)5589 (95.2)χ2 = 56.4
 Yes45 (2.8)107 (3.9)80 (6.9)24 (8.2)15 (15.6)271 (4.8)df = 1
Newborn admission      <  0.001
 No1422 (88.5)2399 (88.1)991 (85.9)231 (78.8)82 (85.4)5125 (87.3)χ2 = 15.2
 Yes185 (11.5)323 (11.9)162 (14.1)62 (21.2)14 (14.6)746 (12.7)df = 1
  1. *Pearson’s χ2 test. df: degrees of freedom. Statistical significance at p ≤ 0.05