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Table 1 Comparison of maternal and child characteristics between those included and not included in the present study

From: Trajectories of maternal depressive symptoms from the antenatal period to 24-months postnatal follow-up: findings from the 2015 Pelotas birth cohort

Characteristics Included (n = 3040) Not included (n = 1235) p-value
Maternal
 ABEP, mean (sd)a 25.7 (9.4) 23.6 (10.4) < 0.001
 Schooling (years), mean (sd)a 10.4 (3.8) 9.1 (4.2) < 0.001
 Maternal age (years), mean (sd)a 27.4 (6.5) 26.5 (6.8) < 0.001
 Single mother, (%) 12.6 18.0 < 0.001
 Skin color, White (%) 73.2 66.6 < 0.001
 Parity ≥2 (%) 48.8 55.1 < 0.001
 Depression before pregnancy (%) 17.2 16.4 0.784
 Unplanned pregnancy (%) 42..8 53.4 < 0.001
 Prenatal consultations ≤6 (%) 10.5 24.4 <  0.001
 Worked during pregnancy (%) 41.7 50.7 < 0.001
 Smoking during pregnancy (%) 13.8 23..1 < 0.001
 Alcohol during pregnancy (%) 6.8 8.8 0.021
 Drugs during pregnancy (%) 1.2 0.0 0.290
 C-section (%) 67.0 60.7 < 0.001
 Self-rated health poor/very poor (%) 13.7 13.0 0.623
Child
 Sex, male (%) 50.7 50.4 0.831
 Low birthweight (%) 9.3 11.9 0.008
 APGAR 5′ ≤ 6 (%) 0.8 2.4 < 0.001
 Intermediate or intensive care hospitalization after birth (%) 7.7 10.4 0.005
  1. X2 Test for all except a
  2. a ANOVA test