Table 1.
Past 3 months’ substance use comparison between UHR and FEP cohorts
| Frequency | UHR, N = 622 | FEP, N = 643 | UHR, N = 622 | FEP, N = 643 |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | n (%) | |
| Tobacco; p-value# < 0.001 | Cannabis; p-value# < 0.001 | |||
| Never | 340 (58%) | 243 (40%) | 330 (56%) | 254 (42%) |
| Once or twice | 56 (9.5%) | 64 (11%) | 73 (12%) | 66 (11%) |
| Monthly | 16 (2.7%) | 15 (2.5%) | 28 (4.8%) | 43 (7.1%) |
| Weekly | 27 (4.6%) | 28 (4.6%) | 64 (11%) | 81 (13%) |
| Daily or almost daily | 149 (25%) | 256 (42%) | 93 (16%) | 161 (27%) |
| ATS; p-value# < 0.001 | Any illicit*; p-value# < 0.001 | |||
| Never | 494 (84%) | 443 (73%) | 316 (54%) | 234 (39%) |
| Once or twice | 55 (9.4%) | 80 (13%) | 76 (13%) | 69 (11%) |
| Monthly | 25 (4.3%) | 31 (5.1%) | 31 (5.3%) | 45 (7.4%) |
| Weekly | 10 (1.7%) | 32 (5.3%) | 66 (11%) | 84 (14%) |
| Daily or almost daily | 4 (0.7%) | 17 (2.8%) | 99 (17%) | 174 (29%) |
#Pearson's Chi-squared test. Missing data for UHR include 21 for tobacco, cannabis, amphetamine-type stimulants (ATS), and any illicit substance Missing data for FEP include 38 for tobacco, 39 for cannabis, 41 for ATS, and 37 for any illicit substance
*Highest frequency of any reported illicit substance