Odds ratios (ORs) and 95% confidence intervals (CIs) for stomach and oesophageal cancer by number of nitrosatable pesticides used and years of nitrosatable pesticides used among adult farmers
| Cases | Controls | OR* | 95% CI | p value for trend | |
|---|---|---|---|---|---|
| *Odds ratio adjusted for age and gender. | |||||
| †Reference category: non-farmers. | |||||
| ‡Sum of total number of nitrosatable pesticides used. | |||||
| §From first to last year of nitrosatable pesticides used. | |||||
| Total number of nitrosatable pesticides usde‡ | |||||
| Stomach | |||||
| Non-farmers | 59 | 184 | 1.0 | Ref† | |
| 0 | 52 | 122 | 0.9 | 0.5 to 1.4 | |
| 1–3 | 21 | 38 | 1.2 | 0.6 to 2.2 | |
| ⩾4 | 15 | 61 | 0.7 | 0.3 to 1.3 | 0.436 |
| Oesophagus | |||||
| Non-farmers | 62 | 184 | 1.0 | Ref† | |
| 0 | 33 | 122 | 0.8 | 0.5 to 1.4 | |
| 1–3 | 6 | 38 | 0.5 | 0.2 to 1.2 | |
| ⩾4 | 17 | 61 | 0.7 | 0.4 to 1.4 | 0.206 |
| Total year of nitrosatable pesticides used§ | |||||
| Stomach | |||||
| Non-farmers | 59 | 184 | 1.0 | Ref† | |
| 0 | 70 | 159 | 0.9 | 0.6 to 1.4 | |
| ⩽20 | 9 | 35 | 0.7 | 0.3 to 1.7 | |
| >20 | 9 | 27 | 0.8 | 0.3 to 1.8 | 0.414 |
| Oesophagus | |||||
| Non-farmers | 62 | 184 | 1.0 | Ref† | |
| 0 | 42 | 159 | 0.8 | 0.5 to 1.3 | |
| ⩽20 | 5 | 35 | 0.4 | 0.2 to 1.1 | |
| >20 | 9 | 27 | 0.8 | 0.4 to 1.9 | 0.203 |