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. 2012 Sep;73(5):749–760. doi: 10.15288/jsad.2012.73.749

Table 1.

Study 2 demographic characteristics at baseline and follow-up

Variable Continuous nondrinkers (n = 20) M (SD) or % Heavy drinking transitioners (n = 20) M (SD) or %
Baseline
 Age, years 14.77 (1.14) 15.07 (1.26)
 Male gender 70% 70%
 Race, White 55% 65%
 Family history of alcoholism density, range: 0–2 0.19 (0.31) 0.40 (0.63)
 Conduct disorder positive 0% 0%
 Hollingshead Index of Social Position score 27.40 (16.30) 19.10 (12.08)
 Parental salary, U.S. $* $109K ($63K) $171K ($103K)
 Education, years 8.10 (1.29) 8.75 (1.37)
 Females’ Pubertal Development Scale total 15.83 (2.48) 18.00 (2.10)
 Males’ Pubertal Development Scale total 13.79 (2.75) 14.15 (3.16)
 Beck Depression Inventory total 2.20 (2.61) 1.89 (2.62)
 Spielberger State Anxiety total 26.15 (6.04) 26.94 (5.91)
 CBCL/YSR Internalizing T score 46.47 (9.28) 44.25 (10.36)
 CBCL/YSR Externalizing T score 39.76 (6.51) 42.81 (8.38)
 Sleepiness rating before scan 4.60 (1.47) 4.68 (1.83)
 Sleepiness rating after scan 5.70 (1.78) 5.89 (2.13)
 Grade point average 3.35 (0.74) 3.53 (0.45)
Follow-up
 Age, years 17.71 (1.44) 18.46 (1.90)
 Years between scans 2.94 (0.98) 3.43 (1.07)
 Conduct disorder positive* 0% 15%
 Females’ Pubertal Development Scale total 19.43 (0.98) 20.00 (0.00)
 Males’ Pubertal Development Scale total 17.33 (2.35) 17.29 (3.15)
 Education, years 11.00 (1.41) 11.89 (2.11)
 Beck Depression Inventory total 1.35 (1.84) 2.60 (3.33)
 Spielberger State Anxiety total 25.00 (5.01) 22.68 (2.98)
 CBCL/YSR Internalizing T score 40.37 (7.43) 41.58 (9.47)
 CBCL/YSR Externalizing T score 41.74 (8.81) 46.32 (10.15)
 Sleepiness rating before scan 3.90 (1.21) 4.25 (1.65)
 Sleepiness rating after scan 5.60 (1.76) 6.15 (1.76)
 Grade point average 3.48 (0.39) 3.35 (0.51)

Notes: Ethnicity was 30% Latino; race was 60% White, 35% multiracial, 3% African-American, 3% Asian (no significant between-group differences). K = 1,000; CBCL = Child Behavior Checklist; YSR = Youth Self-Report.

*

Continuous nondrinkers ≠ heavy drinkers, p < .05.

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