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Table 2 Demographic grouped by visual subtypes by two different radiologists

From: Diagnostic efficacy of visual subtypes and low attenuation area based on HRCT in the diagnosis of COPD

Subtypes

Normal

PSE

Bronchitis

Centrilobular emphysema (mild)

Centrilobular emphysema (moderate)

Centrilobular emphysema (severe)

Advanced destructive emphysema

p Value

Number, N (%)

28 (9.86%)

31 (10.92%)

29 (10.21%)

49 (17.25%)

63 (22.18%)

76 (26.76%)

8 (2.82%)

Age, year

59 (58.25,64.75)

64 (56,68)

67 (58,81)

66 (59,75.5)

67 (64,73)

69 (63.25,72)

68.50 (64,78.75)

< 0.01

Sex, man, N (%)

17 (60.71%)

18 (58.06%)

14 (48.28%)

40 (81.63%)

57 (90.48%)

62 (81.58%)

7 (87.5%)

< 0.01

BMI, kg/m2

25.43 (23.49,29.38)

29.75 (24.80,30.00)

27.43 (24.68,29.75)

24.49 (21.97, 26.32)

24.80 (21.97, 25.86)

22.59 (18.98,25.33)

19.84 (17.28,21.88)

< 0.01

mMRC scores

3 (0,3)

2 (2,3)

2 (1,3)

2 (1,2)

2 (1,4)

3 (3,4)

4 (3,4)

< 0.01

Symptoms

       

< 0.01

Cough

5 (17.86%)

7 (22.58%)

6 (20.69%)

14 (28.57%)

10 (15.87%)

2 (2.63%)

0 (0%)

Expectoration

4 (14.29%)

11 (35.48%)

2 (6.90%)

8 (16.33%)

9 (14.29%)

1 (1.32%)

1 (12.50%)

Difficult breathing

19 (67.86%)

13 (41.94%)

21 (72.41%)

27 (55.10%)

44 (69.84%)

73 (96.05%)

7 (87.50%)

Current smoker, N (%)

16 (57.14%)

20 (64,52%)

25 (86.21%)

30 (61.22%)

51 (80.95%)

64 (84.21%)

6 (75%)

Acute exacerbations (frequency/year)

0 (0,1)

0 (0,1)

0 (0,2)

1 (0,2)

1 (0,2)

2 (1,3.5)

3.5 (2,4)

< 0.01

FEV1

1.46 (1.21, 1.84)

1.56 (1.21,2.50)

1.56 (1.21,1.89)

1.51 (1.06,1.95)

1.42 (1.17,1.91)

1.26 (0.90,1.51)

1.04 (0.74,1.21)

< 0.01

FVC

2.83 (2.24, 3.61)

2.45 (2.06, 3.70)

2.45 (1.98, 2.99)

2.40 (1.80, 3.15)

2.40 (2.04, 2.65)

2.27 (1.91, 2.65)

2.08 (1.54, 2.33)

< 0.01

FEV1%

47.25 (41.20, 63.95)

60 (41.20, 78.90)

58 (47.30, 68.00)

53.20 (45.35, 66.25)

51.40 (40.50, 58.30)

42 (31.98, 53.20)

32.85 (26.63, 44.70)

< 0.01

FEV1/FVC%

61.11 (60.96, 68.79)

63.67 (58.74,67.15)

62.13 (52.85,71.29)

63.21 (58.64,67.64)

57.35 (51.54, 67.00)

51.52 (46.78,59.74)

51.26 (46.60, 52.90)

< 0.01

RV/TLC%

49.81 (44.76, 50.62)

49.81 (49.81, 54.64)

52.79 (50.27, 62.47)

52.64 (46.29, 63.15)

59.23 (52.48, 67.28)

62.58 (57.01, 69.60)

63.33 (59.61, 69.46)

< 0.01

  1. Data were presented as median (interquartile range), absolute values and percentage
  2. FEV1 forced expiratory volume at 1S, FVC forced vital capacity, FEV1% FEV1 percentage in predicted value, RV/TLC% residual air volume in total lung volume percentage