Table 3.

Study characteristics

Author (year)	Country	Model	Patient population	N =	Average age (years)	Study design and evidence score	Outcomes
Nicholson et al. (2020) [10]	United Kingdom	Store-and-forward	Teleconsultative service for general dermatology	60	78% ≤	Cross-sectional survey, 4	Primary: patient satisfaction
			51% Female		55
			65% White
Mehrtens et al. (2019) [11]	United Kingdom	Store-and-forward	Teleconsultative service for general dermatology	37	−	Retrospective observational study, 3	Primary: Number of consultations, number of face-to-face appointments avoided
							Secondary: Patient satisfaction
Baranowski et al. (2019) [18]	United States	Store-and-forward in comparison to teleconsultative method	Teleconsultative service for Department of Veterans Affairs	100	60.9	Cross-sectional survey, 4	Primary: patient satisfaction
			60% White
			36% Black or African American
Wang et al. (2018) [22]	Taiwan	Store-and-forward	Follow-up care for cosmetic dermatology patients	28	−	Cross-sectional survey, 4	Primary: patient satisfaction
Bosanac et al. (2018) [26]	United States	Store-and-forward	Follow-up care for actinic keratoses patients receiving topical therapy	13	67	Randomized controlled trial, 1	Primary: number of treatment doses, times contacted clinic, patient satisfaction
			96% Male
Lim et al. (2018) [16]	Australia	Store-and-forward	Patients treated for early stage melanoma who required follow-up via teledermatology	262	64.3	Retrospective observational study, 3	Primary: determine proportion of adults who preferred standard scheduled visits or fewer follow-up visits using teledermatology
			36% Female
Rajda et al. (2018) [27]	United States	Store-and-forward	General dermatology consultation service	152	37.8	Case–control study, 2	Primary: access, satisfaction, utilization, costs
Fiks et al. (2018) [19]	United States	Store-and-forward	Pediatric dermatology patients	197	7.3	Prospective comparative study, 2	Primary: feasibility study for store-and-forward application; general satisfaction
			67% White
Marchell et al. (2017) [28]	United States	Controlled study comparing in-person exam to store-and-forward to live-interactive	Patients cycled through all 3 modalities	191	−	Quasi-randomized control trial, 2	Primary: Patient and provider satisfaction with teledermatology; Absolute preference of in-person, store-and-forward, or live-interactive teledermatology
Pathipati et al. (2016) [24]	United States	Store-and-forward	General dermatology service	38	39.3	Case series study, 4	Primary: Provider confidence in diagnosis; time to consult
			84% Female
							Secondary: Patient satisfaction
Chee et al. (2016) [29]	Australia	Store-and-forward	Cosmetic laser resurfacing follow-up	24	−	Retrospective observational study, 3	Primary: Patient satisfaction
Bianciardi et al. (2016) [20]	Italy	Store-and-forward	Pediatric dermatology wound care follow-up	19	−	Case series study, 4	Primary: Patient satisfaction
Livingstone et al. (2015) [30]	United Kingdom	Store-and-forward	General adult dermatology	129	−	Retrospective observational study, 3	Primary: Cost-effectiveness and patient satisfaction
Ford et al. (2015) [31]	United Kingdom	Store-and-forward	5 general teledermatology practices	28	−	Prospective comparative study, 2	Primary: Reduction of secondary care referrals
							Secondary: patient satisfaction
Quran et al. (2015) [17]	Jordan	Live-interactive	Teleconsultation services provided to 2 rural hospitals	88	−	Cross-sectional survey, 4	Primary: patient satisfaction
Frühauf et al. (2015) [32]	Austria	Store-and-forward	Acne patients followed for isotretinoin therapy	69	18	Randomized control trial, 1	Primary: therapeutic outcomes and adverse reactions
			25 Females
			44 Males				Secondary: patient satisfaction
Lester et al. (2014) [25]	United States	Store-and-forward	PCP teletriage for dermatologic cases;	63	−	Case series study, 4	Primary: number of secondary referrals
			Department of Veterans Affairs
							Secondary: patient satisfaction
Kaliyadan et al. (2013) [23]	Saudi Arabia	Store-and-forward	General dermatology	161	−	Cross-sectional survey, 4	Primary: diagnostic concordance; patient satisfaction
Hsueh et al. (2012) [12]	United States	Store-and-forward	General dermatology, consult service; Department of Veterans Affairs	196	71	Case–control study, 4	Primary: patient satisfaction
			97% Male
Frühauf et al. (2012) [13]	Austria	Store-and-forward	Patients were followed for response to psoriasis therapy	10	40	Cross-sectional survey, 4	Primary: patient satisfaction
			60% Male
Koller et al. (2011) [14]	Austria	Store-and-forward	Patients were followed for response to biologic psoriasis therapy	19	46.2	Case–control study, 4	Primary: symptom management, safety and adverse events
			12 Males
			7 Females				Secondary: patient satisfaction
Azfar et al. (2011) [15]	Botswana	Store-and-forward	Patients with HIV and mucocutaneous complaints	89	71% were 31–50	Cross-sectional survey, 4	Primary: patient satisfaction
			34 (44%) Males
			44% Unemployed
Thind et al. (2011) [21]	United Kingdom	Store-and-forward	General teledermatology consultation	23	54	Case–control study, 3	Primary: patient satisfaction, diagnostic concordance, secondary referrals