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Table 2 Perinatal indicators and odds ratios of unspecified cerebral palsy (N = 804 854)

From: Perinatal complications and socio-economic differences in cerebral palsy in Sweden – a national cohort study

   N Cases OR (95% C.I.)
Parity 1 334 396 532 1
  2 281 002 410 0.9 (0.7–1.1)
  3 130 463 195 0.9 (0.8 -1.1)
  4+ 58 993 111 1.2 (1.0–1.5)
Multiple birth Yes 18 738 100 3.7 (3.0–4.5)
Gestational age (weeks) 22–28 1 798 107 60.4 (49.2–74.5)
  29–32 6 457 184 27.6 (23.5–32.5)
  33–36 40 148 134 3.1 (2.6–3.7)
  37–41 747 172 799 1
  42–45 9 279 17 1.7 (1.1–2.8)
Small for gestational age Yes 25 427 133 3.7 (3.1–4.4)
Preeclampsia Yes 21 329 62 1.9 (1.5–2.5)
Abrubtio placentae Yes 3 778 60 10.9 (8.4–14.1)
Apgar<7 at 5 min Yes 7 343 242 27.0 (23.5–31.2)
Neonatal distress Yes 11 611 221 15.0 (12.9–17.4)
Total   804 854 1 248