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Rates and patterns of cannabis use over lifetime in PNS and non-PNS participants.
| non-PNS n = 673 | PNS n = 67 | Statistic | ||
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | t | value of p | |
| Number of times used in lifetime | 128.7(125.95) | 88.75 (114.19) | 1.653 | 0.110 |
| Age first tried | 15.7 (2.80) | 16.3 (3.2) | 0.980 | 0.328 |
| n (%) | n (%) | χ 2 | value of p | |
| Current user: yes | 154 (22.88) | 9 (13.43) | 0.034 | 0.855 |
| Lifetime exposure: yes | 375 (55.72) | 24 (35.82) | 11.10 | 0.001** |
PNS, Persistent Negative Symptoms; SD, Standard Deviation.
