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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