. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: J Abnorm Psychol. 2014 Feb;123(1):141–151. doi: 10.1037/a0035670

Table 1. Mean levels of positive urgency, expectancies, and drinker status for boys and girls at each time point.

	Spring, 5^th grade	Fall, 6^th grade	Spring, 6^th grade

	Mean (SD)	Mean (SD)	Mean (SD)
Positive Urgency
Boys	2.17 (.75)	2.09 (.73)	2.06 (.77)
Girls	2.11 (.75)	2.00 (.77)	2.06 (.79)
Overall	2.14 (.75)	2.05 (.75)	2.07 (.78)
Expectancies
Boys	1.53 (.37)	1.69 (.40)	1.69 (.40)
Girls	1.51 (.38)	1.64 (.40)	1.62 (.42)
Overall	1.52 (.37)	1.67 (.40)	1.66 (.41)
Drinker Status
Boys
Non-drinker	815 (88.5%)	790 (87.5%)	745 (84.2%)
Drinker	106(11.5%)	113 (12.5%)	140 (15.8%)
Girls
Non-drinker	847 (91.9%)	814 (90.1%)	768 (86.8%)
Drinker	75 (8.1%)	89 (9.9%)	117 13.2%)

Note: sample sizes are based on full imputation, except for with respect to drinker status, where sample sizes reflect the number participating at each wave (wave 1 n = 1843; wave 2 n = 1806, wave 3 n = 1770).