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Distribution of workers by group, age and weight.
| Groups | N Workers Plant A | N Workers Plant B | N Operators LHU | Total Volunteers | Mean Age (Range) | Mean Weight (Range) |
|---|---|---|---|---|---|---|
| Exposed | 26 | 3 | 0 | 29 | 48.8 (34–67) | 81.5 (63–100) |
| Non-Exposed | 9 | 0 | 21 | 30 | 51.5 (28–64) | 81.4 (60–104) |
| Total | 35 | 3 | 21 | 59 | 50.2 (28–67) | 81.5 (60–104) |
