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Table 2 Children’s information at birth and at the baseline (child’s age 19 weeks)

From: The link between infant regulatory problems, temperament traits, maternal depressive symptoms and children’s psychopathological symptoms at age three: a longitudinal study in a German at-risk sample

  Intervention group, M (SD) Comparison group, M (SD) Significance
Born in which week of pregnancy (Na = 292) 38.3 (2.80) 38.8 (2.27) p = .06
Birth weight (g) (N = 300) 3031.82 (710.93) 3162.99 (615.39) p = .09
Age T1 (corrected, in weeks) (N = 286) 19.3 (3.32) 19.0 (2.39) ns
  n (n%) n (n%)  
Gender (N = 300) 78 male (51.7%) 78 male (52%) ns
Premature baby (birth < 37 SSW) (N = 292) 28 (19.2%) 16 (11.0%) p = .05
  1. aThe variance of the N is based on different return ratios
  2. ns not significant