Prognostic marker for severe acute exacerbation of chronic obstructive pulmonary disease: analysis of diffusing capacity of the lung for carbon monoxide (DLCO) and forced expiratory volume in one second (FEV1)

Table 3 Correlation analysis of length of hospital stay

Parameter	Univariate (Pearson correlation analysis)		Multivariate (multivariate linear regression analysis)
Parameter	Correlation coefficient	P value	B	Standard deviation	P value
D_LCO	− 0.272	< 0.001	− 0.542	0.121	< 0.001
FEV₁	− 0.176	0.001	− 0.293	0.106	0.006

Multivariate analysis was conducted for variables with a P value of less than 0.05 in the univariate analysis, except for baseline spirometry. B is the regression coefficient, and the negative sign of the regression coefficient means that the variables are negatively associated
FEV₁ forced expiratory volume in one second, D_LCO diffusing capacity of the lung for carbon monoxide

ISSN: 1471-2466