Table 2.

Mean maximum drinks in the 6 months before interview across four time points, separated by 2 years each across four classes for 833 adolescents/young adults

Variable	M(SD)	M(SD)	M(SD)	M(SD)
Age, in years	18.3 (2.03)	20.8 (2.23)	22.8(2.18)	24.5 (2.06)
Class (n, %)
1 (571,68.5%)	5.2 (3.32)	6.6 (3.84)	6.7 (3.72)	5.7 (3.20)
2 (123, 14.8%)	8.6 (3.55)	15.8 (5.82)	16.1 (5.83)	17.5 (5.09)
3 (86, 10.3%)	18.0(3.95)	11.9(4.96)	10.5(4.18)	9.3 (3.64)
4 (53, 6.4%)	20.7 (4.07)	22.0 (3.76)	21.9(4.00)	18.4(5.84)