| | |
Firefighters
|
Farm Machinery Factory Workers
|
P-Values
|
|---|
|
Total (N)
| |
371
|
81
|
--
|
|
Noise level (dBA)
|
Mean Range
|
76-79*
|
82.45
|
--
|
| | |
68-115*
|
67-98
| |
|
Age at study initiation (2006)
|
Mean (S.D.)
|
39.46 (6.89)
|
44.98 (6.08)
|
< 0.0001
|
|
Alcohol (%)
| |
222
|
50
|
< 0.0001
|
|
no
| |
40.2
|
38.3
| |
|
yes
| |
59.8
|
61.7
| |
|
Smoking (%)
| |
66
|
34
|
< 0.0001
|
|
no
| |
82.2
|
58
| |
|
yes
| |
17.8
|
42
| |
|
Work period in months (2006)
|
Mean (SD)
|
134.01 (90.34)
|
256.20 (72.74)
|
< 0.0001
|
|
Duration of current employment
|
0-10 years
|
172 (46.36%)
|
3 (3.7%)
|
--
|
| |
11-20 years
|
155 (41.78%)
|
35 (43.2%)
| |
| |
> 20 years
|
44 (11.86%)
|
43 (53.1%)
| |
|
Shift length
| |
9 or 15
|
8 or 10
|
--
|
- * Historically reported values in Korea. See discussion for fuller description
