Table 1.
General characteristics of cleanroom workers and non-cleanroom workers, and other surveyed characteristics of cleanroom workers
| Characteristics | Cleanroom | Non-cleanroom |
|---|---|---|
| Number | 501 | 157 |
| Age** (mean ± SD) | 31.2 ± 6.6 | 35.1 ± 9.0 |
| Gender*(n, %) | ||
| Male | 499 (99.7) | 150 (95.6) |
| Female | 2 (0.3) | 7 (4.4) |
| aSkin disease (n, %) | 37 (7.4) | 9 (5.7) |
| Smoking (%) | 43.1 | 35.8 |
| bAlc. drinking*(%) | 27.8 | 17.5 |
| cNon-exercise (%) | 24.8 | 21.7 |
| McMonnie questionnaire (mean ± SD) | 6.5 ± 4.3 | |
| dWorking duration (mean ± SD) | 1752.0 ± 1442.7 | |
| eWorking hours(mean ± SD) | 53.1 ± 19.0 | |
| fPosition(plain/manager, %) | 90.0/ 10.0 | |
| gWorking form(Blue/White) | 98.0/ 2.0 | |
* p < 0.05, ** p < 0.001
aDermatologic diseases (cleanroom/non cleanroom) pruritus (8 cleanroom workers /1 control group), acne (4/1), seborrheic dermatitis (3/1), atopic dermatitis (1/1), tinea pedis (1/1), allergic contact dermatitis (1/1), xeroderma (3/0), dermographism (1/0), ecthyma (1/0), hives (1/0), corn (1/0), tinea cruris (0/1), psoriasis (0/1), and keloid (0/1)
bHigh risk groups of people drinking more than 15 glasses of alcohol on a week
cNon Exercise group of people exercising less than 600METs on week
dWorking period(days) in the cleanroom
eMean working hours per week in the cleanroom
fPlain: Regular workers who were supervised by manager
Manager: supervisor of regular workers
gWhite workers are office workers
Blue worekrs are workers actually involving in manufacturing products