Table 3.

Heart failure (HF) status and pharmacotherapy adherence among study participants (n=20).

Variable							Value
HF status
	Duration of HF (years), n (%)
					<1	1 (5)
					1-2	2 (10)
					2-5	6 (30)
					>5	11 (55)
	Primary physician managing HF treatment, n (%)
					Cardiologist	13 (65)
					Primary care physician	2 (10)
					Does not know	4 (20)
					Other	1 (5)
	Number of prescribed HF medications, n (%)
					1	1 (5)
					2-5	10 (50)
					>5	9 (45)
	Type of HF, n (%)
				HFpEFa		10 (50)
				HFrEFb		10 (50)
	Number of hospital admissions for HF over the last 12 months, n (%)
			0			2 (10)
			1			7 (35)
			2-5			10 (50)
			>5			1 (5)
	Number of physician encounters due to concerns surrounding worsening HF over last 12 months, n (%)
				0		7 (35)
				1-5		10 (50)
				6-10		1 (5)
				11-20		2 (10)
	Degree of concern about HF, n (%)
			Slightly concerned			2 (10)
			Moderately concerned			5 (25)
			Very concerned			4 (20)
			Extremely concerned			9 (45)
Pharmacotherapy adherence
	Percentage of self-reported HF medication adherence over last 3 months, mean (SD)					90.1 (17.1)
	Uses a system to maintain medication adherence, n (%)
			Yes			12 (60)
			No			8 (40)
	Medication adherence systems used, n (%)c
			Smart pill box			1 (8)
			Pill organizer			10 (83)
			Smartphone-based reminders			3 (25)
			Other			1 (8)
	Visualization of adherence patterns would motivate medication adherence, n (%)
		Yes				151 (55)
		No				7 (35)
		Unsure				2 (10)
	Willingness to use the DPSd , n (%)
		Yes				12 (60)
		No				8 (40)

^aHFpEF: heart failure with preserved ejection fraction.

^bHFrEF: heart failure with reduced ejection fraction.

^cParticipants were provided with the opportunity to select multiple options, if applicable.

^dDPS: digital pill system.