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Table 1 Baseline characteristics of children and parents participating in the intervention and control group a

From: Primary Care Triple P for parents of NICU graduates with behavioral problems: a randomized, clinical trial using observations of parent–child interaction

  Intervention (n = 34) Control (n = 33)
Child characteristics   
 Age, mean (SD), mo 45.6 (10.0) 43.6 (10.7)
 Males 16 (47%) 24 (73%)
 Children part of a twin/triplet 5 (15%) 4 (12%)
 BW, mean (SD), g 1477.1 (849.3) 1626.7 (876.3)
 GA, mean (SD), wk 30.5 (4.2) 30.8 (4.5)
 Abnormal cerebral ultrasound   
  IVH grade 1-2 31 (91%) 31 (94%)
  IVH grade 3-4 3 (9%) 2 (6%)
 Perinatal asphyxia (term-born) 3 (9%) 5 (15%)
 NICU stay, mean (SD), d 21.4 (20.1) 18.6 (16.2)
Family characteristics   
 Maternal age, mean (SD), y 34.1 (5.5) 32.2 (5.2)
 Maternal ethnicity   
  European 33 (97%) 33 (100%)
  North-African 1 (3%) 0
 Firstborn child 26 (77%) 27 (82%)
 Maternal education, mean (SD), y 14.5 (2.1) 14.7 (2.0)
 Paternal education, mean (SD), y 14.2 (2.8) 14.8 (2.4)
 Family situation   
  Nuclear family 32 (94%) 30 (91%)
  Stepfamily 1 (3%) 0
  Single parent family 1 (3%) 3 (9%)
Mother participated in observation 115 (96%) 123 (92%)
  1. Abbreviations: BW birth weight, GA gestational age, IVH intraventricular hemorrhage.
  2. aData are presented as number (percentage) unless otherwise specified.
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