Table 1.
Sample demographics.
| Variable | N | % or M (SD) |
|---|---|---|
| Gender (% male) | 891 | 51.2% |
| White a | 891 | 61.4% |
| Delinquency at age 12 (R1) | 891 | .90 (1.32) |
| Age (round) at first high-school report b | ||
| 13 (R2) | 415 | 46.6% |
| 14 (R3) | 372 | 41.8% |
| 15 (R4) | 78 | 8.8% |
| 16 (R5) | 13 | 1.5% |
| 17 (R6) | 13 | 1.5% |
| Number of drinking days past month c | ||
| R1 | 890 | .18 (1.54) |
| R2 | 887 | .62 (2.03) |
| R3 | 877 | 1.08 (3.13) |
| R4 | 874 | 1.32 (3.28) |
| R5 | 851 | 1.67 (3.39) |
| R6 | 854 | 2.51 (4.55) |
| Number of drinks per day past month c | ||
| R1 | 890 | .19 (2.77) |
| R2 | 886 | .66 (3.55) |
| R3 | 875 | .93 (3.07) |
| R4 | 873 | 1.62 (5.04) |
| R5 | 851 | 1.83 (3.84) |
| R6 | 850 | 2.29 (4.59) |
a
About 1/3 (188/547) of the above defined “Whites” were ethnically Hispanic. The remaining sample was African American (24%), Asian (10%), and mixed race/other (4%).
b
Age (Round) at which participants from the selected cohort first reported attending high-school as part of the NLSY annual assessments.
c
Drinking indicators are hereby reported as distributed in the original NLSY data set -- across assessment waves (rounds), as opposed to across chronological ages or school years (as examined in this report).