Y. Uno et al / Vaccine 30 (2012) 4292-4798 4795 Table 1 The proportions and crude odds ratios (ORs) and 95% confidence intervals (C) for ASD according to vaccines, prenatal factors, perinatal factors and neonatal factors. Variable category ORs 951 0 P-Value Cases (1 = 189) Controls (n = 224) Vaccines MMR 47 (249) 54 (241) 1.04 0.65-1.68 86 Measles 126 (65.7) 141 (62.9) 1.18 0.77-1.80 43 Mumps 110 (58.2) 110 (49.1) 1.44 0.96-2.17 106 Rubella 108 (57.1) 120 (53.6) 1.16 0.77-1.74 47 DPT 185 (97.9) 219 (97.8) 1.06 0.24-4.75 94 Polio 184 (97.4) 221 (98.7) 0.5 0.09-2.43 73 B-encephalitis 167 (85.4) 206 (92 0) 0.56 0.33-1.34 22 BOG 182 (96.3) 218 (97.3) 0.72 0.21-2.42 55 Prenatal factors Maternal hypertension 6(32) 2.42 0.53-12.36 20 Albuminuria, edema 18 (9.5) 19 (8.5) 1.13 0.55-2.35 71 Anemia 59 (31.2) 69 (30.8) 1.02 0.65-1.58 93 Perinatal and neonatal factors Prolonged labor () 20h) 4/169 (4.7) 200 (4.5) 1.06 0.36-3.06 92 Method of delivery Cesarean section 21 (1 1.1) 24 (107) 1.04 0.54-2.02 90 Obstetrical vacuum extraction or forceps delivery 23/168 (13.7) 22/200 (1 1.0) 1.28 0.66-251 .43 Low Apgar score (