Skip to main content

Table 1 General characteristics of cleanroom workers and non-cleanroom workers, and other surveyed characteristics of cleanroom workers

From: Evaluation of the dermatologic life quality among cleanroom workers in a secondary battery factory

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  
  1. * p < 0.05, ** p < 0.001
  2. 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)
  3. bHigh risk groups of people drinking more than 15 glasses of alcohol on a week
  4. cNon Exercise group of people exercising less than 600METs on week
  5. dWorking period(days) in the cleanroom
  6. eMean working hours per week in the cleanroom
  7. fPlain: Regular workers who were supervised by manager
  8. Manager: supervisor of regular workers
  9. gWhite workers are office workers
  10. Blue worekrs are workers actually involving in manufacturing products