Table 2
Urinary Pt concentration in police officers grouped by age
| Age (years) | Subjects (no.) | Mean (SD)* (ng/l) |
|---|---|---|
| *Data referred to collections at the beginning and end of shift. | ||
| †Police officers engaged in office work (number of “useful values”: 49). | ||
| ‡Police officers engaged in traffic control (number of “useful values”: 94). | ||
| Control subjects† | ||
| ⩽30 | 2 | 1.62 (1.29) |
| 31–40 | 19 | 3.98 (3.18) |
| 41–50 | 18 | 6.35 (3.38) |
| ⩾51 | 10 | 4.30 (2.30) |
| Exposed subjects‡ | ||
| ⩽30 | 19 | 4.51 (2.30) |
| 31–40 | 34 | 4.30 (2.55) |
| 41–50 | 20 | 5.16 (2.87) |
| ⩾51 | 21 | 5.75 (3.81) |
