Table 7.
Hazard ratios (95% confidence intervals) and numbers of cases for mortality from non-Hodgkin's lymphoma among male and female workers with exposure to chemicals
| Men | Women | |||
|---|---|---|---|---|
| Chemical | Hazard ratio (95% CI) | No. exposed cases | Hazard ratio (95% CI) | No. exposed cases |
| Any solvent | 1.48 (0.70–3.12) | 50 | 1.07 (0.47–2.44) | 12 |
| 1,1,1-trichloroethane | 1.51 (0.61–3.73) | 12 | - | 0 |
| Acetone | 1.49 (0.58–3.82) | 10 | 0.73 (0.16–3.32) | 2 |
| Carbon tetrachloride | 1.38 (0.63–3.04) | 28 | 1.16 (0.49–2.74) | 10 |
| Chloroform | - | 0 | - | 0 |
| Freon | 1.96 (0.83–4.68) | 15 | 2.25 (0.63–8.09) | 3 |
| Isopropyl alcohol | 2.00 (0.83–4.83) | 14 | 2.14 (0.60–7.69) | 3 |
| JP4 gasoline | 1.71 (0.74–3.95) | 19 | 0.70 (0.16–3.15) | 2 |
| Metal fumes/dust | 0.76 (0.20–2.89) | 3 | - | 0 |
| Methylene chloride | 2.02 (0.76–5.42) | 8 | - | 0 |
| Methylethyl ketone | 1.15 (0.40–3.32) | 6 | 0.42 (0.05–3.26) | 1 |
| Nitroglycerine | - | 0 | - | 0 |
| O-dichlorobenzene | 1.90 (0.66–5.51) | 6 | 2.07 (0.27–16.10) | 1 |
| Other alcohols | 1.79 (0.58–5.49) | 5 | - | 0 |
| Perchloroethylene | 2.32 (0.75–7.15) | 5 | 2.35 (0.52–10.71) | 2 |
| Silica | 2.71 (0.34–21.81) | 1 | - | 0 |
| Solder flux | 1.81 (0.74–4.44) | 13 | 2.55 (0.71–9.17) | 3 |
| Stoddard solvent | 1.47 (0.68–3.20) | 32 | 0.76 (0.28–2.06) | 6 |
| Styrene | - | 0 | - | 0 |
| Toluene | 1.05 (0.36–3.06) | 6 | 0.89 (0.25–3.20) | 3 |
| Xylene | 2.48 (0.29–20.93) | 1 | - | 0 |
| Zinc chromate | 1.34 (0.52–3.50) | 9 | 1.01 (0.28–3.63) | 3 |
Cox regression model: time variable = age, covariate = race
Referent group for all models for males: male workers with no chemical exposure (n=1,836)
Referent group for all models for females: female workers with no chemical exposure (n=1,983)
A “-”indicates the hazard ratio cannot be calculated due to empty cell(s)