Demographic characteristics and confounding variables of biowaste collectors, compost workers, and control subjects
| Group (n= ) | Age (y) | Exposure (months) | Workers with confounding exposures | Smoking habits | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | (Range) | Mean (SD) | (Range) | Never | Former | Current | |||||
| Biowaste (53) | 33 (6)2-160 | (21–50) | 18 (22) | (2–126) | 5 | 9 | 9 | 35 | |||
| Compost (58) | 40 (11) | (19–59) | 37 (26)2-165 | (4–112) | 7 | 15 | 10 | 33 | |||
| Control (40) | 38 (11) | (20–61) | 0.4 (0.3) | (0–1) | 7 | 10 | 4 | 26 | |||