Study area | Control area | |||
---|---|---|---|---|
1983–84 | 1989 | 1983–84 | 1989 | |
Minor (AIS 1) | ||||
Injured | 794 | 694 | NA | NA |
Non-injured | 7772 | 7621 | ||
Odds ratio (CI) | 0.89 (0.80 to 0.99) | |||
Moderate (AIS 2) | ||||
Injured | 444 | 215 | NA | NA |
Non-injured | 8122 | 8100 | ||
Odds ratio (CI) | 0.49 (0.41 to 0.57) | |||
Severe (AIS 3–6) | ||||
Injured | 21 | 26 | NA | NA |
Non-injured | 8545 | 8289 | ||
Odds ratio (CI) | 1.28 (0.72 to 2.27) | |||
Not classified | ||||
Injured | 1 | 5 | ||
Total | ||||
Injured | 1260 | 940 | 610 | 537 |
Non-injured | 7306 | 7375 | 4933 | 4659 |
Odds ratio (CI) | 0.74 (0.68 to 0.81) | 0.93 (0.82 to 1.05) |