Mean decibel measured (LEQ) during shifts
| No. of subjects | DBA, mean (SD) | % of samples >85 dBA | Sample time, minutes, mean (SD) | |
|---|---|---|---|---|
| *Other trades includes labourer, sheet metal worker, operating engineer, and sprinkler fitter. | ||||
| All subjects | 130 | 86.5 (5.2) | 60 | 460 (48) |
| Carpenter | 61 | 89.9 (4.1) | 87 | 464 (49) |
| Electrician | 47 | 83.3 (3.8) | 32 | 462 (48) |
| Other trades* | 22 | 84.1 (5.2) | 2 | 448 (46) |
| Labourer | 4 | 84.2 (1.8) | 25 | 440 (18) |
| Sheet metal worker | 8 | 85.0 (4.8) | 63 | 435 (30) |
| Operating engineer | 4 | 90.6 (1.5) | 100 | 523 (14) |
| Sprinkler fitter | 6 | 78.5 (2.1) | 0 | 421 (41) |