Table 2.

Summary statistics for Years 4 and 5

Variable	Possible range	Year 4 M (SD)	Year 5 M (SD)	d
Alcohol quantity	1−17	3.16 (2.24)	2.49 (2.03)	0.31***
Blackout frequency	1−5	1.67 (0.76)	1.60 (0.76)	0.09*
RAPI dependence	0−12	0.91 (1.68)	0.69 (1.55)	0.14***
Social and emotional consequences	0−4	0.50 (0.70)	0.40 (0.64)	0.15***

Note: RAPI = Rutgers Alcohol Problem Index.

^*p < .05;

^***p < .001.