Table 2.

COX PROPORTIONAL HAZARD MODEL SUMMARY FOR AGE AND/OR COMORBIDITY-ADJUSTED INFLUENCE OF PRE-6MWD AND POST-6MWD ON THE RISK OF DEATH AND FOR AGE-, COMORBIDITY-, AND PRE–6MWD-ADJUSTED INFLUENCE OF Δ6MWD ON THE RISK OF DEATH

	6MWD ratio	Estimate β	Lower 95%, confidence limit	Upper 95%, confidence limit
Age-adjusted 6MWD and risk of death
Pre-6MWD
Log-hazard	x m:2x m	0.056	0.001	0.111
Hazard	x m:2x m	1.058	1.001	1.118
Post-6MWD
Log-hazard	x m:2x m	0.291	0.211	0.370
Hazard	x m:2x m	1.337	1.234	1.448
Δ6MWD
Log-hazard	x m:2x m	0.060	−0.007	0.127
Hazard	x m:2x m	1.062	0.993	1.136
Age- and comorbidity-adjusted 6MWD and risk of death
Pre-6MWD
Log-hazard	x m:2x m	0.056	0.001	0.111
Hazard	x m:2x m	1.058	1.001	1.118
Post-6MWD
Log-hazard	x m:2x m	0.290	0.209	0.371
Hazard	x m:2x m	1.336	1.232	1.449
Δ6MWD
Log-hazard	x m:2x m	0.055	−0.013	0.122
Hazard	x m:2x m	1.056	0.987	1.130
Age-, comorbidity-, and pre–6MWD-adjusted 6MWD and risk of death
Δ6MWD
Log-hazard	x m:2x m	0.292	0.207	0.376
Hazard	x m:2 x m	1.339	1.231	1.457

Abbreviation: 6MWD, indicates 6-minute walk distance.