ED intervention at club 1. Comparison of assaults in club 1 before and after ED intervention and with nine other “hotspot” venues
| Capacity | Assaults in first (preintervention) period | Assaults in second (intervention) period | Total assaults | Event ratio | 95% CI | |
|---|---|---|---|---|---|---|
| 95% CI used throughout (z = 1.96). | ||||||
| *Club 1 was also subject to high level police intervention. | ||||||
| †Club 1 versus all other clubs pooled. | ||||||
| Club 1* | 2000 | 71 | 33 | 104 | 0.46 | 0.31 to 0.70 |
| Club Z | 1970 | 50 | 44 | 94 | 0.88 | 0.59 to 1.32 |
| Club B | 600 | 37 | 30 | 67 | 0.81 | 0.50 to 1.31 |
| Club R | 400 | 27 | 19 | 46 | 0.70 | 0.39 to 1.26 |
| Club D | 910 | 24 | 13 | 37 | 0.54 | 0.28 to 1.05 |
| Club Bl | 850 | 16 | 6 | 22 | 0.38 | 0.15 to 0.93 |
| Club K | 380 | 13 | 4 | 17 | 0.31 | 0.11 to 0.90 |
| Club S | 250 | 12 | 4 | 16 | 0.33 | 0.11 to 0.98 |
| Club S1 | 6000 | 11 | 19 | 30 | 1.73 | 0.84 to 3.57 |
| Club E | 380 | 10 | 16 | 26 | 1.60 | 0.74 to 3.46 |
| All others† | 200 | 155 | 355 | 0.78 | 0.63 to 0.96 | |