Vaccine preferences driving vaccine-decision making of different target groups: a systematic review of choice-based experiments

Table 1 General study characteristics of included studies

Aspect	Specification	Number of studies (%)
Choice based experiment	ADCE	1 (2.4)
	CA	10 (23.8)
	DCE	31 (73.8)
Year of publication	2000–2005	2 (4.8)
	2006–2010	3 (7.1)
	2011–2015	19 (45.2)
	2016–2020 (September)	18 (42.9)
Target group^a	Health advisors	4 (9.5)
	Representatives	20 (47.9)
	Vaccinees	15 (35.7)
	Vaccinees & representatives	3 (7.1)
Objective^b	Assess preferences vaccines, vaccine attributes, vaccine programs	36 (85.7)
	Compare individual DCE	1 (2.4)
	Compare RP with SP	1 (2.4)
	Estimate WTP	15 (35.7)
	Explore variation in preferences across groups	8 (19.0)
	External factors influencing preferences	6 (14.3)
	Identify reason(s) not to vaccinate	1 (2.4)
	Predict vaccine uptake/coverage	11 (26.2)
	Policy recommendations design and/or communication of vaccine programs/strategies	10 (23.8)
	Trade-off vaccine attributes	6 (14.3)

^aDue to rounding of percentages, the total may not count up to 100%; ^bAs 32 studies included more than objective, the total number of studies exceeds the total amount of included studies (and 100%)

ISSN: 1471-2334