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Table 1 Characteristics of the study subjects

From: Acute respiratory symptoms and evacuation-related behavior after exposure to chlorine gas leakage

Variables

Total (n = 47)

Low exposure (n = 20)

High exposure (n = 27)

n

%

n

%

n

%

Age (year)

   

 Mean ± SD*

41.70 ± 9.27

37.90 ± 9.89

45.00 ± 8.19

Tenure (year)

   

 Mean ± SD

2.55 ± 1.80

2.45 ± 1.96

2.63 ± 1.71

Exposure time (minute)

   

 Median (range)**

10 (1–30)

2 (1–8)

10 (10–30)

Lasting respiratory symptoms (day)

   

 Median (range)**

1 (0–25)

1 (0–5)

2 (0–25)

Sex

   

 Male

39

83.0

17

85.0

22

81.5

 Female

8

17.0

3

15.0

5

18.5

Smoking status

      

 Never

20

42.6

10

50.0

10

37.0

 Current

22

46.8

10

50.0

12

44.4

 Former

5

10.6

0

0.0

5

18.5

Preexisting disease

      

 None

44

93.6

19

95.0

25

92.6

 Asthma or COPD

0

0.0

0

0.0

0

0.0

 Hypertension

2

4.3

0

0.

2

7.4

 Dermatologic disease

1

2.1

1

5.0

0

0.0

  1. *p value <0.05 by t-test
  2. **p value <0.05 by Mann-Whitney U test