Table 2.

Survival for Entire Study Cohort and Stratified by Quintile of Mean Minutes/Day Active in the First 30 to 60 Days After Implantable Cardioverter-Defibrillator Implantation

Survival Outcomes	Mean Baseline Activity (Minutes/Day)						P Value*
	Entire Study (N=98 437) 107.5±66.2	Quintile 1 (N=19 693) 32.5±13.5	Quintile 2 (N=19 691) 67.6±8.6	Quintile 3 (N=19 674) 97.3±8.9	Quintile 4 (N=19 692) 132.5±12.0	Quintile 5 (N=19 687) 207.7±58.5
Survival at 1 year (95% CI)	0.950 (0.948 to 0.951)	0.865 (0.860 to 0.870)	0.945 (0.942 to 0.948)	0.968 (0.965 to 0.970)	0.982 (0.980 to 0.984)	0.987 (0.986 to 0.989)	<0.0001
Survival at 2 years (95% CI)	0.882 (0.879 to 0.884	0.713 (0.705 to 0.720)	0.858 (0.852 to 0.863)	0.916 (0.911 to 0.920)	0.947 (0.943 to 0.950)	0.965 (0.962 to 0.968)	<0.0001
Survival at 3 years (95% CI)	0.818 (0.815 to 0.821)	0.593 (0.584 to 0.602)	0.774 (0.767 to 0.782)	0.855 (0.848 to 0.861)	0.906 (0.901 to 0.911)	0.939 (0.935 to 0.943)	<0.0001
Survival at 4 years (95% CI)	0.761 (0.757 to 0.765)	0.500 (0.488 to 0.512)	0.704 (0.694 to 0.715)	0.794 (0.785 to 0.804)	0.865 (0.857 to 0.873)	0.908 (0.901 to 0.914)	<0.0001

CI indicates confidence interval.

^*P value for trend across quintiles according to log-rank test.