Table 2

Means and 95% CI of variables at birth in relation to socioeconomic trajectories in parents born in 1982

Variables at birth
Weight (kg)Length (cm)Head circumference (cm)Gestational age (week)
Mothers’ socioeconomic trajectoryp=0.001p<0.001p=0.012p=0.003
 Always poor2.99 (2.83 to 3.14)47.31 (46.59 to 48.04)33.60 (33.12 to 34.08)37.94 (37.11 to 38.76)
 Poor→non-poor2.91 (2.53 to 3.30)47.26 (45.52 to 49.00)33.57 (32.44 to 34.70)38.06 (36.52 to 39.60)
 Non-poor→poor3.28 (3.12 to 3.43)48.44 (47.74 to 49.14)34.11 (33.51 to 34.72)39.44 (38.78 to 40.10)
 Never poor3.31 (3.17 to 3.46)49.08 (48.43 to 49.73)34.46 (34.11 to 34.81)39.28 (38.68 to 39.88)
Fathers’ socioeconomic trajectoryp=0.41p=0.493p=0.716p=0.448
 Always poor2.99 (2.80 to 3.19)48.05 (47.44 to 48.66)33.74 (33.38 to 34.11)38.32 (37.36 to 39.27)
 Poor→non-poor3.33 (3.03 to 3.63)48.70 (47.07 to 50.33)34.54 (33.70 to 35.38)39.89 (38.51 to 41.27)
 Non-poor→poor3.13 (2.94 to 3.33)48.29 (47.14 to 49.43)33.70 (32.92 to 34.48)38.92 (37.92 to 39.93)
 Never poor3.11 (2.89 to 3.33)48.47 (47.79 to 49.16)33.98 (33.57 to 34.39)38.84 (37.95 to 39.73)