Table II:
Substance Use by birth cohort (N=934)
| Variable | Category | <1970 N (%) |
1970–1979 N (%) |
1980–1989 N (%) |
1990–1999 N (%) |
Total N (%) |
Chi-Square Value (d.f.) |
P-value |
|---|---|---|---|---|---|---|---|---|
| Cigarettes | No | 256 (48.2) | 85 (46.7) | 60 (45.1) | 32 (66.7) | 433 (48.4) | 7.20 (3) | .065 |
| Yes | 275 (51.8) | 97 (53.3) | 73 (54.9) | 16 (33.3) | 461 (51.6) | |||
| Binge Drinking | No | 355 (67.6) | 122 (64.9) | 77 (57.5) | 37 (77.1) | 591 (66) | 7.69 (3) | .053 |
| Yes | 170 (32.4) | 66 (35.1) | 57 (42.5) | 11 (22.9) | 304 (34) | |||
| Marijuana | No | 325 (66.5) | 114 (66.7) | 57 (46.3) | 24 (53.3) | 520 (62.8) | 19.89 (3) | <.001 |
| Yes | 164 (33.5) | 57 (33.3) | 66 (53.7) | 21 (46.7) | 308 (37.2) | |||
| Crack | No | 434 (82.8) | 164 (87.2) | 123 (92.5) | 45 (95.7) | 766 (85.9) | 12.86 (3) | .004 |
| Yes | 90 (17.2) | 24 (12.8) | 10 (7.5) | 2 (4.3) | 126 (14.1) | |||
| Cocaine | No | 479 (91.6) | 168 (89.4) | 118 (88.7) | 38 (80.9) | 803 (90.1) | 6.21 (3) | .10 |
| Yes | 44 (8.4) | 20 (10.6) | 15 (11.3) | 9 (19.1) | 88 (9.9) | |||
| Opioids | No | 457 (87.7) | 170 (90.4) | 125 (94) | 42 (89.4) | 794 (89.3) | 4.67 (3) | .197 |
| Yes | 64 (12.3) | 18 (9.6) | 8 (6) | 5 (10.6) | 95 (10.7) | |||
| Sedatives | No | 464 (89.1) | 171 (91) | 116 (87.2) | 41 (87.2) | 792 (89.1) | 1.32 (3) | .724 |
| Yes | 57 (10.9) | 17 (9) | 17 (12.8) | 6 (12.8) | 97 (10.9) | |||
| Ecstasy | No | 506 (97.1) | 178 (94.7) | 124 (93.2) | 39 (83) | 847 (95.3) | 21.11 (3) | <.001 |
| Yes | 15 (2.9) | 10 (5.3) | 9 (6.8) | 8 (17) | 42 (4.7) | |||
| Injection Drugs | No | 431 (83.4) | 165 (88.8) | 114 (87.1) | 45 (95.8) | 755 (85.7) | 7.72 (3) | .052 |
| Yes | 86 (16.6) | 21 (11.2) | 17 (12.9) | 2 (4.2) | 126 (14.3) |
Note. The number of participants per birth cohort was as follows:
<1970’s (n=557), 1970–1979 (n=192), 1980–1989 (n=137), 1990–1999 (n=48), total (N=934). N may vary slightly according to missing data.