TABLE 1

Demographic Information and Outcome Variables in W4 to W7

W4W5W6W7
NWeighted %95% CINWeighted %95% CINWeighted %95% CINWeighted %95% CI
Sex             
 Female 1264 58.9 54.7 to 63.1 1298 59.2 55.4 to 63.1 1345 59.6 56.1 to 63.2 1347 58.7 55.1 to 62.3 
 Male 913 41.1 37.0 to 45.3 904 40.8 36.9 to 44.6 961 40.4 36.8 to 43.9 976 41.3 37.7 to 44.9 
Race and/or ethnicity             
 Hispanic 643 19.8 10.9 to 28.8 656 20.2 12.2 to 28.3 693 19.6 12.2 to 27.0 695 19.6 12.0 to 27.1 
 African American 557 13.5 6.6 to 20.3 572 13.6 6.6 to 20.6 598 19.3 9.4 to 29.2 595 19.3 9.6 to 29.1 
 White 862 61.8 49.8 to 73.9 858 60.8 49.6 to 71.9 598 19.3 9.4 to 29.2 914 56.6 44.3 to 69.0 
Other 109 4.9 2.9 to 6.9 108 5.4 3.3 to 7.6 113 4.8 2.2 to 7.3 113 4.5 2.1 to 6.9 
Family affluence             
 Low 692 22.2 16.7 to 27.8 711 23.0 17.5 to 28.4 736 23.0 17.0 to 29.0 750 24.4 18.6 to 30.1 
 Moderate 1008 48.8 45.2 to 52.4 1019 48.6 45.6 to 51.5 1072 48.9 45.8 to 52.1 1079 48.2 44.9 to 51.5 
 High 476 29.0 23.5 to 34.5 470 28.5 23.0 to 34.0 496 28.1 22.4 to 33.8 492 27.4 21.9 to 33.0 
Parental education             
 High school 748 32.2 26.5 to 37.9 764 32.3 26.0 to 38.6 798 31.7 26.3 to 37.1 809 32.7 26.8 to 38.7 
 Some college 726 39.1 35.3 to 42.8 749 38.6 34.3 to 42.9 773 38.8 34.6 to 43.0 784 39.5 35.1 to 43.9 
 Bachelor’s degree 517 28.7 22.8 to 34.7 498 29.1 22.0 to 36.3 534 29.5 22.6 to 36.4 528 27.7 20.8 to 34.7 
Urban or rural location             
 Urban 716 12.9 0.0 to 26.8 742 12.7 0.0 to 26.4 768 13.8 0.0 to 28.3 761 13.8 0.0 to 28.3 
 Suburban 656 49.6 28.9 to 70.3 670 50.0 29.1 to 70.8 710 50.7 29.8 to 71.7 725 50.9 29.9 to 71.8 
 Rural 593 37.5 21.3 to 53.7 575 37.3 21.2 to 53.4 602 35.4 19.7 to 51.2 616 35.3 19.6 to 51.0 
Residence             
 Parent’s home 1277 52.3 46.0 to 58.9 1317 48.6 41.1 to 56.1 1153 41.4 34.4 to 48.4 1146 38.9 32.3 to 45.5 
 Own place or rented room 262 16.2 12.4 to 20.0 449 28.8 21.7 to 35.8 708 38.8 32.1 to 45.5 939 50.7 45.0 to 56.4 
 Dorm, sorority, or fraternity 533 26.3 21.5 to 31.1 256 13.1 9.2 to 17.0 200 8.9 5.4 to 12.3 37 2.63 0.91 to 4.4 
 Other (barracks, hospital, relatives, etc) 60 5.0 2.9 to 7.1 162 9.5 5.4 to 13.6 202 10.9 8.2 to 13.6 178 7.8 5.7 to 9.8 
DWI             
 No 1067 85.4 81.9 to 88.8 1200 84.2 80.8 to 87.6 1258 79.0 75.9 to 82.0 1311 76.5 72.7 to 80.3 
 Yes 185 14.6 11.2 to 18.1 227 15.8 12.4 to 19.2 336 21.0 18.0 to 24.1 438 23.5 19.7 to 27.3 
RWI             
 No 1618 75.2 71.0 to 79.5 1449 67.0 62.5 to 71.6 1501 64.7 61.0 to 68.4 1539 67.6 64.0 to 71.2 
 Yes 531 24.8 20.5 to 29.1 694 33.0 28.4 to 37.5 756 35.3 31.6 to 39.0 754 32.4 28.8 to 36.0 
Blackout             
 No 1268 84.1 80.4 to 87.8 1345 83.7 78.2 to 89.2 1568 83.9 79.9 to 87.9 1544 82.1 77.7 to 86.6 
 Yes 196 15.9 12.2 to 19.6 216 16.3 10.8 to 21.8 263 16.1 12.2 to 20.1 280 17.9 13.4 to 22.3 
Extreme binge drinking in past 12 mo             
 No drinking — — — — — — — — — 505 18.5 14.5 to 22.6 
 Drink but no binge (male: 1–4; female: 1–3) — — — — — — — — — 551 19.6 16.0 to 23.2 
 Binge (male: 5–9; female: 4–7) — — — — — — — — — 703 33.2 27.7 to 38.6 
 2 times binge (male: 10–14; female: 8–11) — — — — — — — — — 316 15.9 12.3 to 19.4 
 3 times binge or more (male: 15+; female: 12+) — — — — — — — — — 210 12.8 9.7 to 16.0 
 N Mean 95% CI N Mean 95% CI N Mean 95% CI N Mean 95% CI 
C-RDS 1421 7.3 6.7 to 7.9 1526 6.9 6.5 to 7.3 1668 7.3 6.7 to 7.9 1807 7.6 7.3 to 7.9 
W4W5W6W7
NWeighted %95% CINWeighted %95% CINWeighted %95% CINWeighted %95% CI
Sex             
 Female 1264 58.9 54.7 to 63.1 1298 59.2 55.4 to 63.1 1345 59.6 56.1 to 63.2 1347 58.7 55.1 to 62.3 
 Male 913 41.1 37.0 to 45.3 904 40.8 36.9 to 44.6 961 40.4 36.8 to 43.9 976 41.3 37.7 to 44.9 
Race and/or ethnicity             
 Hispanic 643 19.8 10.9 to 28.8 656 20.2 12.2 to 28.3 693 19.6 12.2 to 27.0 695 19.6 12.0 to 27.1 
 African American 557 13.5 6.6 to 20.3 572 13.6 6.6 to 20.6 598 19.3 9.4 to 29.2 595 19.3 9.6 to 29.1 
 White 862 61.8 49.8 to 73.9 858 60.8 49.6 to 71.9 598 19.3 9.4 to 29.2 914 56.6 44.3 to 69.0 
Other 109 4.9 2.9 to 6.9 108 5.4 3.3 to 7.6 113 4.8 2.2 to 7.3 113 4.5 2.1 to 6.9 
Family affluence             
 Low 692 22.2 16.7 to 27.8 711 23.0 17.5 to 28.4 736 23.0 17.0 to 29.0 750 24.4 18.6 to 30.1 
 Moderate 1008 48.8 45.2 to 52.4 1019 48.6 45.6 to 51.5 1072 48.9 45.8 to 52.1 1079 48.2 44.9 to 51.5 
 High 476 29.0 23.5 to 34.5 470 28.5 23.0 to 34.0 496 28.1 22.4 to 33.8 492 27.4 21.9 to 33.0 
Parental education             
 High school 748 32.2 26.5 to 37.9 764 32.3 26.0 to 38.6 798 31.7 26.3 to 37.1 809 32.7 26.8 to 38.7 
 Some college 726 39.1 35.3 to 42.8 749 38.6 34.3 to 42.9 773 38.8 34.6 to 43.0 784 39.5 35.1 to 43.9 
 Bachelor’s degree 517 28.7 22.8 to 34.7 498 29.1 22.0 to 36.3 534 29.5 22.6 to 36.4 528 27.7 20.8 to 34.7 
Urban or rural location             
 Urban 716 12.9 0.0 to 26.8 742 12.7 0.0 to 26.4 768 13.8 0.0 to 28.3 761 13.8 0.0 to 28.3 
 Suburban 656 49.6 28.9 to 70.3 670 50.0 29.1 to 70.8 710 50.7 29.8 to 71.7 725 50.9 29.9 to 71.8 
 Rural 593 37.5 21.3 to 53.7 575 37.3 21.2 to 53.4 602 35.4 19.7 to 51.2 616 35.3 19.6 to 51.0 
Residence             
 Parent’s home 1277 52.3 46.0 to 58.9 1317 48.6 41.1 to 56.1 1153 41.4 34.4 to 48.4 1146 38.9 32.3 to 45.5 
 Own place or rented room 262 16.2 12.4 to 20.0 449 28.8 21.7 to 35.8 708 38.8 32.1 to 45.5 939 50.7 45.0 to 56.4 
 Dorm, sorority, or fraternity 533 26.3 21.5 to 31.1 256 13.1 9.2 to 17.0 200 8.9 5.4 to 12.3 37 2.63 0.91 to 4.4 
 Other (barracks, hospital, relatives, etc) 60 5.0 2.9 to 7.1 162 9.5 5.4 to 13.6 202 10.9 8.2 to 13.6 178 7.8 5.7 to 9.8 
DWI             
 No 1067 85.4 81.9 to 88.8 1200 84.2 80.8 to 87.6 1258 79.0 75.9 to 82.0 1311 76.5 72.7 to 80.3 
 Yes 185 14.6 11.2 to 18.1 227 15.8 12.4 to 19.2 336 21.0 18.0 to 24.1 438 23.5 19.7 to 27.3 
RWI             
 No 1618 75.2 71.0 to 79.5 1449 67.0 62.5 to 71.6 1501 64.7 61.0 to 68.4 1539 67.6 64.0 to 71.2 
 Yes 531 24.8 20.5 to 29.1 694 33.0 28.4 to 37.5 756 35.3 31.6 to 39.0 754 32.4 28.8 to 36.0 
Blackout             
 No 1268 84.1 80.4 to 87.8 1345 83.7 78.2 to 89.2 1568 83.9 79.9 to 87.9 1544 82.1 77.7 to 86.6 
 Yes 196 15.9 12.2 to 19.6 216 16.3 10.8 to 21.8 263 16.1 12.2 to 20.1 280 17.9 13.4 to 22.3 
Extreme binge drinking in past 12 mo             
 No drinking — — — — — — — — — 505 18.5 14.5 to 22.6 
 Drink but no binge (male: 1–4; female: 1–3) — — — — — — — — — 551 19.6 16.0 to 23.2 
 Binge (male: 5–9; female: 4–7) — — — — — — — — — 703 33.2 27.7 to 38.6 
 2 times binge (male: 10–14; female: 8–11) — — — — — — — — — 316 15.9 12.3 to 19.4 
 3 times binge or more (male: 15+; female: 12+) — — — — — — — — — 210 12.8 9.7 to 16.0 
 N Mean 95% CI N Mean 95% CI N Mean 95% CI N Mean 95% CI 
C-RDS 1421 7.3 6.7 to 7.9 1526 6.9 6.5 to 7.3 1668 7.3 6.7 to 7.9 1807 7.6 7.3 to 7.9 

Family Affluence Scale32  categorized students as low, moderate, and high affluence on the basis of the Family Affluence Scale tertiles.33  Parent education level was categorized as less than a high school diploma; high school diploma or general equivalency diploma; some college, technical school, or associate’s degree; and bachelor’s or graduate degree. Surrounding areas where students lived at W1 were coded as urban, suburban, and rural areas. Residence at W4 to W7: parent or guardian’s home, own place (eg, rented room or apartment), on campus (eg, school dormitory or residence hall), and other places. CI, confidence interval; —, not applicable.

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