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Table 2 Crude estimates of risks (RR and 95%CI) for delivery outcomes according to birth weight

From: Perinatal outcomes associated with low birth weight in a historical cohort

Outcomes Low birth weight n (%) Normal birth weight n (%) RR (95%CI)
Mode of delivery    
   Cephalic, vaginal 2,774 (42.8) 19,561 (52.2) 1.00
   Breech, vaginal 126 (1.9) 181 (0.5) 4.74 (3.79-5.93)
   Forceps 423 (6.5) 5,801 (15.5) 0.58 (0.53-0.63)
   Cesarean 3,116 (48.1) 11,668 (31.1) 1.42 (1.38-1.46)
   Unknown 38 (0.6) 256 (0,7)  
Total 6,477 (100.0) 37,467 (100.0)  
Indication for Cesarean    
   Acute fetal distress 1,339 (43.0) 3,307 (28.3) 2.25 (2.13-2.38)
   CPD 36 (1.2) 1,345 (11.5) 0.20 (0.14-0.28)
   Breech 299 (9.6) 1,039 (8.9) 1.93 (1.71-2.18)
   Preeclampsia 387 (12.4) 405 (3.5) 6.04 (5.28-6.90)
   Previous Cesarean 328 (10.5) 2,726 (23.4) 0.86 (0.78-0.96)
   Placental abruption 127 (4.1) 91 (0.8) 9.45 (7.24-12.34)
   Other 600 (19.2) 2,755 (23.6) 1.44 (1.33-1.56)
Total 3,116 (100.0) 11,668 (100.0)