Table 2.
Annual incidences in Toulouse urban unit (A) and region (B) of serious cannabis-related adverse events among recent and regular cannabis users
| A) Urban unit | ||||||
|---|---|---|---|---|---|---|
| Patients | Incidence (·10−3) | |||||
| Year | n | Recent users* | (95% CI) | Regular users† | (95% CI) | |
| 2004 | 25 | 0.67 | (0.41, 0.94) | 1.15 | (0.70, 1.60) | |
| 2005 | 41 | 1.08 | (0.75, 1.42) | 1.86 | (1.29, 2.43) | |
| 2006 | 61 | 1.59 | (1.19, 1.99) | 2.73 | (2.04, 3.41) | |
| 2007 | 73 | 1.87 | (1.44, 2.30) | 3.20 | (2.47, 3.94) | |
| B) Region | ||||||
|---|---|---|---|---|---|---|
| Hypothesis 1: ‘Cannabis users who needed to be hospitalized in Midi-Pyrenees were all admitted to a Toulouse teaching hospital.’ | ||||||
| Patients | Incidence (·10−3) | |||||
| Year | n | (95% CI) | Recent users* | (95% CI) | Regular users† | (95% CI) |
| 2004 | 25 | (5, 45) | 0.30 | (0.18, 0.42) | 0.52 | (0.31, 0.72) |
| 2005 | 41 | (21, 61) | 0.49 | (0.34, 0.63) | 0.83 | (0.58, 1.09) |
| 2006 | 61 | (41, 81) | 0.71 | (0.53, 0.89) | 1.22 | (0.92, 1.53) |
| 2007 | 73 | (53, 93) | 0.84 | (0.65, 1.03) | 1.44 | (1.11, 1.77) |
| Hypothesis 2: ‘Annual incidence is constant and observations made at urban unit scale can be proportionally reported to Midi-Pyrenees region.’ | ||||||
|---|---|---|---|---|---|---|
| Patients | Incidence (·10−3) | |||||
| Year | n | (95% CI) | Recent users* | (95% CI) | Regular users† | (95% CI) |
| 2004 | 56 | (13, 99) | 0.67 | (0.41, 0.94) | 1.15 | (0.70, 1.60) |
| 2005 | 91 | (47, 135) | 1.08 | (0.75, 1.42) | 1.86 | (1.29, 2.43) |
| 2006 | 136 | (92, 181) | 1.59 | (1.19, 1.99) | 2.73 | (2.04, 3.41) |
| 2007 | 162 | (117, 207) | 1.87 | (1.44, 2.30) | 3.20 | (2.47, 3.94) |
*
Recent use: Between one and nine uses during the last 30 days.
†
Regular use: 10 or more uses during the last 30 days.