From: Acute Symptoms after a Community Hydrogen Fluoride Spill
| Characteristic | Number | % |
|---|---|---|
| Age(years) | ||
| 0–9 | 109 | 5.8 |
| 10–19 | 80 | 4.2 |
| 20–29 | 338 | 17.9 |
| 30–39 | 575 | 30.4 |
| 40–49 | 400 | 21.2 |
| 50–59 | 253 | 13.4 |
| ≥60 | 135 | 7.1 |
| Gender | ||
| Male | 997 | 52.8 |
| Female | 893 | 47.2 |
| First visit to the outpatient department | ||
| Occupational and environmental medicine | 1528 | 80.8 |
| Pediatrics | 136 | 7.2 |
| Internal medicine, Pulmonology | 130 | 6.9 |
| Emergency medicine | 55 | 2.9 |
| Ophthalmologic medicine | 22 | 1.1 |
| Otorhinolaryngology | 11 | 0.6 |
| Others | 9 | 0.6 |
| Exposure characteristics | ||
| Adjacent residents | 205 | 11.2 |
| Other residents | 575 | 31.5 |
| Workers | 728 | 39.9 |
| Firefighters | 38 | 2.1 |
| Police and public officials | 66 | 3.6 |
| Others | 211 | 11.6 |
| Location at the time of the accident | ||
| Indoor | 922 | 80.4 |
| Outdoor | 219 | 19.1 |
| Others | 6 | 0.5 |
| Time of first hospital visit | ||
| Within 3 days | 176 | 9.3 |
| After 4 days | 1714 | 90.7 |
| Distance from the place of the accident spot | ||
| Under 100 m | 227 | 14.6 |
| 100 m-1 km | 721 | 46.5 |
| Over 1 km | 603 | 38.9 |