Table 4.

Comparison of depressive symptoms between the four classes (N = 1,244).

Variables	Total (n = 1,244) M ± SD	Class 1 (n = 243) M ± SD	Class 2 (n = 83) M ± SD	Class 3 (n = 76) M ± SD	Class 4 (n = 842) M ± SD	F (p)	Post hoc (Bonferroni)
Depressive symptoms	17.07 ± 5.34	13.91 ± 4.43	16.49 ± 5.27	16.74 ± 4.95	18.07 ± 5.25	44.42 (<0.001)	1 <2 = 3 <4

Covariates (gender, age, education level of parents, foreign parent's country of origin, income) were included in non-parametric ANCOVA.