Estimated adjusted odds ratios (95% confidence interval) for injuries to farm children by age group
| Adjusted* odds ratio for injury | |||
|---|---|---|---|
| Risk factor | 0–4 (273 cases, 2995 controls) | 5–9 (163 cases, 2590 controls) | 10–15 (79 cases, 1616 controls) |
| *Controlled for calendar year and years in risk group (if confounders) and all other variables selected into final model. | |||
| Sex | |||
| Boy | 1.53 (1.19 to 1.98) | 2.38 (1.68 to 3.37) | 3.17 (1.87 to 5.39) |
| Girl | 1 | 1 | 1 |
| Mother worked off-site | |||
| Yes | 0.72 (0.54 to 0.96) | 1.43 (1.03 to 1.98) | Not selected in final model |
| No | 1 | 1 | |
| Mother's highest education | |||
| Less than high school | 1 | Not selected in final model | 1 |
| High school graduate | 1.53 (0.99 to 2.35) | 0.57 (0.30 to 1.09) | |
| Some postsecondary | 1.76 (1.03 to 3.01) | 2.10 (1.01 to 4.36) | |
| Postsecondary graduate | 1.41 (0.90 to 2.21) | 0.98 (0.53 to 1.82) | |
| Parental status on farm | |||
| Both own/operate | 1.26 (0.98 to 1.63) | Not selected in final model | 1.52 (0.92 to 2.50) |
| One or neither own/operate | 1 | 1 | |
| Father's highest education | |||
| Less than high school | Not selected in final model | 1 | Not selected in final model |
| High school graduate | 1.29 (0.86 to 1.94) | ||
| Some postsecondary | 2.04 (1.18 to 3.51) | ||
| Postsecondary graduate | 0.97 (0.62 to 1.52) | ||
| Acres of field crops | |||
| 0 | Not selected in final model | 1 | Not selected in final model |
| 1–90 | 1.01 (0.63 to 1.61) | ||
| 91–264 | 0.83 (0.52 to 1.34) | ||
| ≥265 | 0.51 (0.30 to 0.87) | ||
| Poultry on farm | |||
| Yes | Not selected in final model | 1.62 (1.13 to 2.33) | Not selected in final model |
| No | 1 | ||
| No of beef cattle | |||
| 0 | 1 | Not selected in final model | Not selected in final model |
| 1–20 | 1.86 (1.21 to 2.84) | ||
| ≥20 | 1.43 (1.07 to 1.92) | ||
| No of dairy cattle | |||
| 0 | 1 | 1 | Not selected in final model |
| 1–60 | 1.13 (0.74 to 1.71) | 0.96 (0.53 to 1.74) | |
| ≥60 | 1.39 (1.04 to 1.87) | 1.46 (0.98 to 2.20) | |