Table 1 Descriptive statistics of all workers (n = 412)
From: Interaction of smoking and occupational noise exposure on hearing loss: a cross-sectional study
Smokers (n = 206) | Non-smokers (n = 206) | P value | |||
|---|---|---|---|---|---|
Mean (SD) | Range | Mean(SD) | Range | ||
Age (year) | 42.7(6.2) | 24–62 | 41.4(7.2) | 26–67 | 0.04 |
Noise exposure duration (year) | 18.6(6.6) | 2–30 | 17.1(6.9) | 2–32 | 0.02 |
Hearing threshold at 4000 Hz (dB)* | 34.1(16.4) | 0–80 | 16.4(12.3) | 0–65 | < 0.001 |
Smoking (Pack-Year) | 13.6(10.6) | 0.3–78 | ---- | ---- | ---- |