Table 3.

Associations of changes LVEF and CMR characteristic with appropriate shock and HF hospitalization

	Appropriate shock (n=23)		Heart failure hospitalization (n=45)
	Model 1 *	Model 2 †	Model 1 *	Model 2 †
	HR (95% CI)	HR (95% CI)	HR (95% CI)	HR (95% CI)
Changes in LVEF
Worsened	1.09(0.38, 3.10)	1.16(0.39, 3.45)	2.78(1.34, 5.79)	2.88(1.33, 6.25)
Unchanged	Reference	Reference	Reference	Reference
Improved	0.39(0.13, 1.23)	0.50(0.16, 1.59)	0.39(0.18, 0.84)	0.37(0.17, 0.82)
P-trend	0.08	0.17	<0.001	<0.001
CMR scar variable ‡
Etiology-specific tertile 1	Reference	Reference	Reference	Reference
Etiology-specific tertile 2	1.86(0.59, 5.88)	1.69(0.55, 5.21)	1.36(0.64, 2.90)	1.27(0.56, 2.89)
Etiology-specific tertile 3	2.89 (0.92, 9.10)	2.39 (0.79, 7.24)	1.26 (0.54, 2.91)	0.88 (0.37, 2.11)
P-trend	0.07	0.12	0.55	0.82

^*Model 1: Adjusted for age, sex, race, device type, atrial fibrillation, cardiomyopathy etiology, and baseline LVEF.

^†Model 2: Further included changes in LVEF and CMR scar variable in the same model.

^‡This variable represents gray zone among participants with ischemic cardiomyopathy and total scar among participants with non-ischemic cardiomyopathy, respectively