Table 4.

WTP^a details of the 9 discrete choice experiment studies included in the final sample.

Study, attribute (reference level), and desired level or levels of the attribute					Marginal WTP (PPPb, 2021 US dollar value)
Discrete choice experiment studies that reported WTP as a 1-time payment (n=6)
	Buchanan et al [35]
		How similar was your consultation to a traditional “face-to-face” appointment (the same)
			Video consultation	–7.02
			Symptoms submitted via an electronic form	–15.40
		How long did you have to wait for a consultation
			Reduced by 1 hour	0.22
		Reputation of the GPc (2 stars)
			5 stars	13.65
		Collecting antibiotics (taking a paper prescription to a pharmacy located in the same building as the local medical center)
			Prescription emailed to a pharmacy in another building as the local medical center	–11.38
		Form of consultation (at local medical centers)
			Via the internet (–10.83)	–17.09
	Park et al [70]
		Service platform (the internet)
			Mobile phone	22.72
		Service providers (small- and medium-sized hospitals and clinics)
			Large general hospitals	21.64
		Service scope (glucose management only)
			Comprehensive diabetes care	24.23
		Personalization of consultation (absent)
			Present	11.87
		24-hour service accessibility (absent)
			Present	10.27
		Reply time (within 3 days)
			Within 1 day	8.45
		Assurance of service (low assurance)
			High assurance	18.61
		System failure (system down 1%-5%)
			System down <1%	12.68
		Confidentiality (1%-5% confidentiality breaches)
			<1% confidentiality breaches	8.78
	Snoswell et al [71]
		Method of screening (by a GP)
			Mobile teledermoscopy	0.88
		Time away from usual activities (>4 hours)
			3-4 hours	6.11
			1-2 hours	53.75
		Chances of detecting a melanoma if one is present (65%–75%)
			85%-95%	54.37
			≥95%	87.73
		Wait time for results (3 days)
			<4 hours	4.92
		Person reviewing the results (GP)
			Dermatologist	32.21
		Number of moles removed to find 1 melanoma (5)
			3	31.51
	Snoswell et al [36]
		Type and mode of consultation (local in-person consultation with a generalist physician at a GP clinic or small hospital)
			In-person consultation with a specialist physician at a large metropolitan hospital	9.88
			Videoconference with a specialist physician from a local GP clinic or small hospital	91.33
			Videoconference with a specialist from home	33.53
		Time away from home, office, or usual activities, including travel (half a day)
			1 full day	–11.80
			≥2 full days	–113.66
		Perceived benefit from the consultation (limited)
			Partial benefit	53.86
			Benefit	111.28
		Consulted or not (attending a consultation)
			No consultation chosen	–175.14
	Spinks et al [72]
		WTP for teledermoscopy service, in addition to skin self-examination, GP screening, and clinic skin cancer screening		84.38
	van der Pol and McKenzie [73]
		Type of clinic
			Telemedicine	773.31
			Face-to-face	873.45
		Driving time (up to 30 minutes)
			30-60 minutes	–57.49
			60-90 minutes	–74.18
			2-4 hours	–155.77
		Wait time
			Each additional week	–27.82
Discrete choice experiment studies that reported WTP as a monthly payment: WTP per month (n=3)
	Ahn et al [74]
		Device type (smartphone)
			Smart home	138.29
			Wearable device	632.49
		Service type (management of oxygen saturation level)
			Blood glucose	30.27
			Blood pressure	–56.35
		Service tailoring (absent)
			Present	82.76
		Reply time (usual)
			1-hour reduction	3.57
	Chang et al [75]
		Per household		5.40d
	Deal et al [76]
		Speed of adding new information to the system (2 weeks)
			1 week	5.70
			48 hours	7.60
			Overnight	2.85
			1 hour	0
		Individual patient tracker values displayed (most recent values only)
			2 most recent	8.55
			12-month history	13.31
			5-year history	8.55
			Complete history	–5.70
		Nurse coordinator tasks or duties (no nurse coordinator)
			Basic dutiese	16.16
			Basic duties and input data	20.91
			Basic duties and information sessions	17.11
			Basic duties, phone, and email	33.27
			Basic duties and reminders	19.96
		Frequency of contacting nurse coordinator (no contact)
			1 day per month	6.65
			2 days per month	10.45
			1 day per week	5.70
			2 days per week	10.91
			5 days per week	1.90
		Number of visits to a physician per year (1)
			2	19.01
			3	25.66
			4	27.56
			6	7.60

^aWTP: willingness to pay.

^bPPP: purchasing power parity.

^cGP: general practitioner.

^d95% CI 3.79-7.02.

^eBasic duties of the nurse coordinator: assist the physician in using the tracker, keep tracker information updated, and ensure action is taken to address uncontrolled cardiovascular disease risks.