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Table 1 Participant characteristics at baseline in the Korean CODA cohort (n = 457)

From: Long-term exposure to PM10 and NO2 in relation to lung function and imaging phenotypes in a COPD cohort

 

All (n = 457)

Non-COPD

(n = 161)

COPD

(n = 296)

Gender

 Male

335 (73.3)

97 (60.2)

238 (80.4)

 Female

122 (26.7)

64 (39.8)

58 (19.6)

Age

71.7 ± 7.3

70.8 ± 7.7

72.2 ± 7.1

 44 ~ 59 yr

29 (6.3)

15 (9.3)

14 (4.7)

 60 ~ 69 yr

113 (24.7)

42 (26.1)

71 (24.0)

 70 ~ 79 yr

260 (56.9)

91 (56.5)

169 (57.1)

 80 ~ 96 yr

55 (12.0)

13 (8.1)

42 (14.2)

Education

  < Elementary school

143 (32.0)

43 (27.7)

100 (34.2)

 Elementary school

169 (37.8)

67 (43.2)

102 (34.9)

 Middle school

65 (14.5)

23 (14.8)

42 (14.4)

  ≥ High school

70 (15.7)

22 (14.2)

48 (16.4)

Income (x104won)

  ≤ 49

280 (63.9)

95 (62.5)

185 (64.7)

 50–99

70 (16.0)

22 (14.5)

48 (16.8)

  ≥ 100

88 (20.1)

35 (23.0)

53 (18.5)

Job

 Cement factory

170 (37.2)

55 (34.2)

115 (38.9)

 farmer

149 (32.6)

62 (37.9)

87 (29.3)

 Others

138 (30.2)

44 (27.3)

94 (31.8)

Smoking

 Never-smoker

165 (36.1)

87 (54.0)

78 (26.4)

 Former-smoker

194 (42.5)

52 (32.3)

142 (48.0)

 Current-smoker

98 (21.4)

22 (13.7)

76 (25.7)

Pack-years

17.6 ± 23.4

12.0 ± 18.5

20.6 ± 25.2

Height (cm)

159.4 ± 9.3

157.8 ± 10.3

160.3 ± 8.6

Weight (kg)

59.7 ± 10.4

60.0 ± 10.6

59.6 ± 10.3

BMI (kg/m2)

23.5 ± 3.2

24.0 ± 3.3

23.2 ± 3.2

  < 23.0

207 (45.3)

64 (39.8)

143 (48.3)

 23.0 ~ 24.9

106 (23.2)

40 (24.8)

66 (22.3)

  ≥ 25.0

144 (31.5)

57 (35.4)

87 (29.4)

History of COPD medications

 No

362 (79.2)

149 (92.5)

213 (72.0)

 Yes

95 (20.8)

12 (7.5)

83 (28.0)

Asthma, history of disease

 No

376 (83.9)

136 (87.7)

240 (81.9)

 Yes

72 (16.1)

19 (12.3)

53 (18.1)

Pulmonary outcome at baseline visit, Post BDR

 FVC, L

3.02 ± 0.81

2.88 ± 0.80

3.10 ± 0.81

 FVC, % predicted

97.8 ± 19.1

96.9 ± 18.9

98.3 ± 19.3

 FEV1, L

1.96 ± 0.60

2.19 ± 0.61

1.84 ± 0.56

 FEV1, % predicted

87.3 ± 22.5

100.7 ± 21.1

80.0 ± 19.7

 FEV1/FVC

0.65 ± 0.11

0.76 ± 0.05

0.59 ± 0.08

Emphysema index, n = 414

6.36 ± 6.66

3.35 ± 3.60

7.64 ± 7.23

Wall area %, n = 414

68.8 ± 5.2

67.5 ± 5.4

69.3 ± 5.0

  1. Data are mean ± SD for continuous variables and n(%) for categorical variables