Table 2.
Visor | No visor | Proportion with visor | Odds ratio (95% CI) | |
---|---|---|---|---|
Canada | 219 | 100 | 0.69 | Reference |
USA | 109 | 35 | 0.76 | 1.42 (0.91–2.23) |
Europe | 122 | 16 | 0.88 | 3.48 (1.96–6.17) |
Sweden | 38 | 4 | 0.90 | 4.33 (1.50–12.48) |
Czech Republic | 22 | 4 | 0.85 | 2.51 (0.84–7.48) |
Russia | 17 | 2 | 0.89 | 3.88 (0.88–17.12) |
Finland | 13 | 2 | 0.87 | 2.97 (0.66–13.40) |
Abbreviation: CI, confidence interval.