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Table 3 Means of steps, AEE, PA 3 and PAL across COPD risk groups A-D and GOLD grades I-IV

From: Differences in classification of COPD patients into risk groups A-D: a cross-sectional study

Variable

 

Steps

AEE [cal]

PA3[min]

PAL [METs]

Classification

N

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

CAT - Severity grades

78

    

A

27

6763.1 ± 4005.1

599.3 ± 477.0

116.3 ± 89.9

1.4 ± 0.3

B

36

4152.6 ± 2571.9

337.2 ± 297.3

76.5 ± 76.9

1.3 ± 0.3

C + D

15

2732.8 ± 1362.5

418.9 ± 295.4

99.1 ± 85.4

1.4 ± 0.3

mMRC – Severity grades

71

    

A

40

5971.3 ± 3302.5

460.4 ± 399.1

98.2 ± 84.0

1.4 ± 0.3

B

17

3633.8 ± 2996.1

376.3 ± 343.9

79.9 ± 88.4

1.3 ± 0.3

C + D

14

2811.4 ± 1378.2

426.5 ± 305.0

100.9 ± 88.3

1.4 ± 0.3

CAT - Exacerbations

78

    

A

27

6763.1 ± 4005.1

599.3 ± 477.0

116.3 ± 90.0

1.4 ± 0.3

B

42

3923.7 ± 2488.5

344.0 ± 288.8

77.7 ± 76.4

1.3 ± 0.3

C + D

9

2858.3 ± 1439.1

441.3 ± 334.7

108.4 ± 92.1

1.4 ± 0.3

mMRC - Exacerbations

71

    

A

43

5794.4 ± 3247.1

469.2 ± 391.5

97.7 ± 84.8

1.4 ± 0.3

B

19

3426.5 ± 2937.7

349.3 ± 322.7

80.2 ± 84.9

1.3 ± 0.3

C + D

9

2858.3 ± 1439.1

441.3 ± 334.7

108.4 ± 92.1

1.4 ± 0.3

GOLD grades

78

    

I

22

6191.8 ± 3985.2

496.9 ± 434.8

96.1 ± 97.1

1.3 ± 0.3

II

41

4778.3 ± 3128.5

424.1 ± 388.0

92.1 ± 78.0

1.3 ± 0.3

III

9

3358.1 ± 1436.3

462.1 ± 345.5

116.4 ± 103.2

1.4 ± 0.3

IV

6

1794.8 ± 371.2

354.0 ± 211.7

73.0 ± 44.9

1.3 ± 0.1

  1. AEE, active energy expenditure; CAT, COPD assessment test; COPD, chronic obstructive pulmonary disease; GOLD, Global Initiative for Chronic Obstructive Lung Disease; MET, metabolic equivalent; mMRC, modified Medical Research Council; PAL, physical activity level; PA3, physical activity duration above 3 METs; SD, standard deviation.