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Table 11 FEV1, FVC, TLC, and RV among the enrolled patients based on mMRC stages

From: Diagnostic performance of lung volumes in assessment of reversibility in chronic obstructive pulmonary disease

mMRC stage

Baseline

Post bronchodilators

FEV1 (L)

FVC (L)

TLC (L)

RV (L)

FEV1 (L)

FVC (L)

TLC (L)

RV (L)

Stage 1

0.91±0.11

2.50±0.12

6.79±0.17

4.70±0.39

0.99±0.12

2.51±0.12

6.50±0.10

4.53±0.10

Stage 2

0.88±0.26

2.47±0.14

6.86±0.20

5.01±0.21

0.97±0.42

2.49±0.13

6.41±0.13

4.39±0.14

Stage 3

0.63±0.13

2.39±0.57

7.07±0.34

5.79±0.44

0.95±0.32

2.54±0.51

6.70±0.34

5.22±0.30

Stage 4

0.41±0.18

2.16±0.41

7.59±0.25

6.05±0.63

0.89±0.26

2.93±0.18

6.49±0.25

5.10±0.47

P value

0.018

0.031

0.046

0.020

0.71

0.012

0.88

0.027

  1. FEV1 forced expiratory volume in first second, FVC forced vital capacity, mMRC modified research council
  2. Data expressed as mean (SD)
  3. P value was significant if < 0.05