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Table 2 Characteristics of subjects

From: The effect of applying ethnicity-specific spirometric reference equations to Asian migrant workers in Korea

Variables

Korean (n = 498)

Migrant workers

p value *

East Asian (n = 11)

Southeast Asian (n = 109)

Central Asian (n = 19)

South Asian (n = 27)

All migrants (n = 166)

Age (years)

29.3 ± 5.3

33.9 ± 4.8

28.1 ± 5.3

30.63 ± 5.1

29.3 ± 4.8

29.0 ± 5.3

0.487†

Height (cm)

172.6 ± 5.8

166.9 ± 4.8

165.0 ± 5.4

171.2 ± 5.7

167.9 ± 6.5

166.3 ± 5.9*

<0.001†

Weight (kg)

72.4 ± 11.6

64.2 ± 7.2

62.0 ± 9.1

74.2 ± 14.3

65.4 ± 9.8

64.1 ± 10.5*

<0.001†

BMI (kg/m2)

24.3 ± 3.4

23.3 ± 2.6

22.7 ± 2.6

25.1 ± 3.9

23.1 ± 2.7

23.1 ± 2.9*

<0.001†

Smoking history

       

Never smokers

183 (36.7)

5 (45.5)

63 (57.8)

8 (42.1)

12 (44.4)

88 (53.0)

0.001‡

Ex-smokers

56 (11.2)

2 (18.2)

5 (4.6)

1 (5.3)

3 (11.1)

11 (6.6)

 

Current smokers

259 (52.0)

4 (36.4)

41 (37.6)

10 (52.6)

12 (44.4)

67 (40.4)

 

Working duration

       

<3 years

282 (56.6)

9 (81.8)

78 (71.6)

19 (100)

22 (81.5)

128 (77.1)

<0.001‡

≥3 years

216 (43.4)

2 (18.2)

31 (28.4)

0

5 (18.5)

38 (22.9)

 
  1. Unit: mean ± standard deviation, number (%).
  2. *Differences between Korean and all migrant workers.
  3. †Calculated using t-test.
  4. ‡Calculated using χ 2 test.
  5. BMI; Body mass index.