Tabela 3. Categorical variables according to years.
| Variable | Classification | Year | ||||||
|---|---|---|---|---|---|---|---|---|
| 2019 | 2020 | 2021 | ||||||
| n | % | n | % | n | % | p | ||
| Trauma etiology | Traffic events | 309 | 24.9% | 275 | 26.1% | 167 | 22.6% | <0.001 |
| FSL | 255 | 20.6% | 201 | 19.0% | 132 | 17.9% | <0.001 | |
| FAL | 86 | 6.9% | 84 | 7.9% | 79 | 10.7% | 0.855 | |
| Burn | 185 | 14.9% | 150 | 14.2% | 93 | 12.6% | <0.001 | |
| General blunt trauma | 274 | 22.2% | 198 | 18.7% | 162 | 22.0% | <0.001 | |
| Penetrating trauma | 74 | 5.9% | 98 | 9.3% | 77 | 10.4% | 0.127 | |
| Others | 54 | 4.4% | 49 | 4.7% | 27 | 3.7% | 0.008 | |
| Trauma circumstance | Sports and leisure Trauma | 26 | 2.1% | 13 | 1.2% | 6 | 0.8% | 0.001 |
| Violence | 92 | 7.4% | 98 | 9.3% | 87 | 11.8% | 0.719 | |
| Not specified | 1119 | 90.5% | 944 | 89.5% | 644 | 87.4% | <0.001 | |
| Type of traffic event | Run over | 34 | 11.2% | 24 | 8.8% | 13 | 7.9% | 0.009 |
| Automobile | 69 | 22.7% | 40 | 14.7% | 25 | 15.2% | <0.001 | |
| Bicycle | 31 | 10.2% | 29 | 10.7% | 31 | 18.9% | 0.957 | |
| Motorcycle | 170 | 55.9% | 179 | 65.8% | 95 | 57.9% | <0.001 | |
| Type of violence | Self-harm | 6 | 6.5% | 7 | 7.2% | 8 | 9.2% | 0.866 |
| Assault | 79 | 85.9% | 80 | 82.5% | 69 | 79.3% | 0.6146 | |
| Domestic violence | 4 | 4.3% | 9 | 9.3% | 7 | 8.0% | 0.386 | |
| Sexual violence | 3 | 3.3% | 1 | 1.0% | 3 | 3.4% | 0.564 | |
Chi-square test, p<0.05. Source: authors.