Table 3.

Multivariate Analysis of Patient Characteristics and Survival After Implantable Cardioverter-Defibrillator Using Time-Varying Analysis of Activity

Variable	AHR (95% CI)*
Age (per 5-year increment)	1.118 (1.103 to 1.134)
ICD type (CRT vs. non-CRT device)	1.356 (1.285 to 1.429)
Male	1.666 (1.564 to 1.776)
Previous ICD implant	1.201 (1.137 to 1.269)
30-day mean daily activity (minutes/day) (per 30 minutes/day increment)**	1.479 (1.451 to 1.508)

AHR indicates adjusted odds ratio; CI, confidence interval; CRT, cardiac resynchronization therapy; ICD, implantable cardioverter-defibrillator.

^*Hazard ratios reported from model adjusted for age, device type, gender, previous ICD, and mean daily activity (minutes/day) treated as a time-varying covariate.

^**That is, for every 30 minutes less of mean daily activity in any previous 30-day period, a 47.9% increased hazard for death was observed, adjusted for other covariates.