Table 2. Comparison of variables between the surviving and deceased groups.
| Variables | Survivor (n = 743) | Death group (n = 315) | P value | |||
|---|---|---|---|---|---|---|
| n | % | n | % | |||
| Sex | Male | 472 | 63.5 | 196 | 62.2 | 0.807 |
| Female | 271 | 36.5 | 119 | 37.8 | ||
| Field of use | Herbicide | 527 | 70.9 | 292 | 92.7 | < 0.001 |
| Insecticide | 176 | 23.7 | 21 | 6.7 | ||
| Surfactant | 22 | 3 | 1 | 0.3 | ||
| Fungicide | 18 | 2.3 | 1 | 0.3 | ||
| Pesticide class | Bipyridylium | 192 | 25.8 | 273 | 86.7 | < 0.001 |
| Glycine derivative | 180 | 24.2 | 11 | 3.5 | ||
| Organophosphate | 92 | 12.4 | 14 | 4.4 | ||
| Phosphinic acid | 86 | 11.6 | 5 | 1.6 | ||
| Pyrethroid | 53 | 7.1 | 5 | 1.6 | ||
| Surfactant | 21 | 2.8 | 1 | 0.3 | ||
| Chloroacetamide | 18 | 2.4 | 2 | 0.6 | ||
| Others | 101 | 13.6 | 4 | 1.3 | ||
Note that the clinical outcome (death rate) is different according to the pesticide group, categorized by either the "field of use" or "pesticide class". The death rate was incomparably high in the herbicide category, particularly for bipyridylium. The P values are from χ2 tests.