TABLE 2.
A breakdown of typical noise sources, sex, average age, noise exposure level, and exposure duration corresponding to workers in three noise kurtosis categories
| Kurtosis Category | Typical Noise Sources | Participants | Noise Exposure | |||
|---|---|---|---|---|---|---|
| Male (n) | Female (n) | Age (yrs) | Duration (yrs) | LAeq (dBA) | ||
| 3 ≤ βN ≤ 10 | Spinning, weaving, pulping | 377 | 140 | 36.4 ± 9.4 | 9.9 ± 7.6 | 88.6 ± 4.6 |
| 10 < βN ≤ 50 | Punching, stamping, metalworking, heat treating, assembly, drilling | 1125 | 412 | 36.3 ± 9.0 | 9.7 ± 7.8 | 87.2 ± 5.1 |
| βN > 50 | Woodworking, nail gunning, assembly | 463 | 84 | 34.6 ± 9.9 | 6.5 ± 6.5 | 87.9 ± 4.8 |
Note: age, duration, and LAeq: mean±1 SD.