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Table 2 Maternal and neonatal characteristics according with the presence or absence of early death of preterm infants in the state capitals of Northeast Brazil (2007)

From: Perinatal factors associated with early neonatal deaths in very low birth weight preterm infants in Northeast Brazil

  Death <7 days (n = 179) Survival ≥7 days (n = 448) p
Maternal age <20 years [n = 627] 56 (31%) 103 (23%) 0.021
Maternal age in years* [n = 627] 24 ± 7 25 ± 7 0.088
Schooling <8 years [n = 627] 90 (50%) 214 (48%) 0.316
Absence of prenatal care [n = 623] 40 (22%) 63 (14%) 0.009
Multiple gestation [n = 627] 34 (19%) 53 (12%) 0.015
Diabetes during gestation [n = 558] 3 (2%) 5 (1%) 0.396
Hypertension in gestation [n = 567] 52 (20%) 153 (37%) <0.001
Peripartum infection [n = 558] 55 (36%) 144 (36%) 0.531
Antenatal steroids [any dose] [n = 596] 60 (36%) 230 (54%) <0.001
Cesarean section [n = 623] 64 (36%) 222 (50%) 0.001
Birth weight <1000 g [n = 627] 129 (72%) 158 (35%) <0.001
Birth weight in grams* [n = 627] 872 ± 229 1082 ± 242 <0.001
Gestational age <28 weeks [n = 627] 106 (59%) 110 (25%) <0.001
Gestational age in weeks* [n = 627] 27.0 ± 2.3 28.8 ± 1.9 <0.001
Male [n = 627] 110 (62%) 208 (46%) <0.001
1st minute Apgar score* [n = 604] 4 ± 2 6 ± 2 <0.001
5th minute Apgar score* [n = 607] 7 ± 2 8 ± 1 <0.001
1st minute Apgar <3 [n = 604] 46 (27%) 36 (8%) <0.001
5th minute Apgar <7 [n = 607] 67 (39%) 48 (11%) <0.001
  1. *Variable expressed in mean ± standard deviation; brackets refers to the number of subjects of information available among the 627 studied infants.