Table 1 Descriptive statistics for the four groups of participating families in cohort 2

Number of participants, N

91

91

63

65

310

Children’s age at t1

in months, M (SD), range

59.0 (3.8)

51–67

59.7 (4.2)

53–69

59.4 (3.6)

52–67

59.3 (4.2)

53–69

59.4 (3.9)

51–69

Children’s gender:

male / female

47 / 44

40 / 51

28 / 35

35 / 30

150 / 160

Families with migration background^a, N (%)

33 (36.3)

45 (49.5)

22 (35.5)

26 (40.0)

126 (40.8)

SES^b, M (SD)

107.4 (34.4)

108.1 (37.0)

106.28 (29.7)

104.63 (35.4)

106.8 (34.4)