Table 1 Order of selection of relative risk estimates from the individual studies when more than one relative risk is given
Benzene and NHL meta-analysisRefinery work and NHL meta-analysis
1. Exposure intensity1. Duration worked
2. Cumulative exposure2. Years since first hire
3. Duration of exposure3. Exposed job category
4. Any benzene exposure4. Any refinery work

  • NHL, non-Hodgkin's lymphoma.