Table 2.

Univariate Cox Regression Analysis of 1-Year Predictors of Mortality in Participants With Exacerbated COPD and Major Depression

Variables	HR	χ2(1)	P Value	95% CI
Sex	0.89	0.096	.76	0.41-1.91
Age	1.03	1.30	.25	0.98-1.08
Falls within 6 mo from entry	2.19	4.87	.03	1.09-4.39
PFSDQ-M dyspnea during activities	1.01	2.46	.12	0.997-1.03
PFSDQ-M fatigue during activities	1.00	0.03	.86	0.98-1.02
PFSDQ-M change with activities	1.00	0.09	.77	0.99-1.02
PFSDQ-M total score	1.00	0.41	.52	0.996-1.008
Charlson Comorbidity Index	1.03	0.13	.72	0.87-1.23
MMSE	0.96	0.18	.67	0.79-1.16
WHODAS-II	1.02	0.39	.53	0.97-1.07
HAM-D	0.98	0.15	.70	0.87-1.10

χ²(1) = χ² statistic with 1 degree of freedom; HR = hazard ratio. See Table 1 legend for expansion of other abbreviations.