Table 2.

Correlation analysis of ΔmMRC scores and changes in pulmonary function parameters

Parameters	ccsa of ΔmMRC score	P-value
ΔIC	−0.490	<0.001
ΔVC	−0.417	<0.001
ΔFVC	−0.393	<0.001
ΔFEV1	−0.305	0.001
ΔRV/TLC	0.420	0.004
ΔTLC	−0.317	0.034
ΔDLCO	−0.185	0.235

Note:

^aAnalysis with Pearson’s correlation test.

Abbreviations: ΔmMRC scores, decline in the modified Medical Research Council scores; ccs, correlation coefficients; ΔIC, increases in inspiratory capacity; ΔVC, increases in vital capacity; ΔFVC, increases in forced vital capacity; ΔFEV₁, increases in forced expiratory volume in 1 second; ΔRV/TLC, increases in the ratio of RV to TLC; ΔTLC, increases in total lung capacity; ΔDLCO, increases in diffusing capacity of the lungs for carbon monoxide; RV, residual volume; TLC, total lung capacity.