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Table 1 Characteristics of laboring women who require operative delivery assistance, N (%) (N = 3408)

From: Effects of maternal obesity on the success of assisted vaginal delivery in Chinese women

  Normal weight (N = 2059) Average BMI = 20.5 Over weight (N = 360) Average BMI = 26.3 Obese (N = 629) Average BMI = 31.2 P-value
Age (years)
 < 20 166 (8.1) 22 (6.1) 34 (5.5) 0.282
 20–24 327 (15.9) 61 (16.9) 109 (17.3)  
 25–29 580 (28.2) 109 (30.3) 187 (29.8)  
 30–35 634 (30.8) 102 (28.5) 177 (28.1)  
 > 35 348 (16.9) 66 (18.2) 121 (19.3)  
 Smoking 187 (9.1) 12 (12.0) 72 (11.5) 0.018
 Diabetes (Type I, II or GDM) 92 (4.6) 22 (6.1) 80 (12.8) < 0.001
 Hypertension: PIH, Chronic & Preeclampsia 148 (7.3) 29 (8.1) 125 (19.9) < 0.001
 Received prenatal care 2028 (98.5) 356 (99.1) 624 (99.2) 0.578
 Induction 1466 (71.2) 249 (69.2) 513 (81.5) < 0.001
 Epidural Anesthesia 1812 (88.0) 308 (85.7) 560 (89.1) 0.719
Adherence to 2009 IOM guideline
 Inadequate 331 (16.1) 55 (15.2) 127 (20.2) < 0.001
 Appropriate 679 (33.0) 106 (29.5) 94 (14.9)  
 Excessive 1052 (51.1) 176 (48.9) 412 (65.5)  
Gestational age
 EGA ≥34 –< 37 weeks 88 (4.3) 19 (5.2) 27 (4.3) 0.747
 EGA 37+ weeks 1966 (95.5) 334 (92.9) 602 (95.7)  
Neonate weight
 LGA 222 (10.8) 39 (11.0) 41 (6.5) 0.001
 AGA 1700 (82.6) 303 (84.2) 517 (82.3)  
 SGA 132 (6.4) 33 (9.1) 71 (11.2)  
  1. GDM (Gestational Diabetes Mellitus), EGA (Estimation of Gestational Age), IOM (Institute of Medicine), SGA (Small for Gestational Age), AGA (Appropriate of Gestational Age), LGA (Large for Gestational Age)