Table 1

General characteristics of the 25 included approaches

Characteristics	Description	N (%)	Referencing
Setting	High income	17 (68)	37 41 43 45 46 49–61 64 67 *
	Middle income	2 (8)	44 63
	Low income	–	–
	Not reported	6 (24)	38–40 47 48 62 65 75 *
Field†	Clinical	10 (40)	41 43–45 49 51 53 54 56 59 60 65 67 *
	Health policy and systems	9 (36)	37 44 49 51–56 60 65 *
	Public health	6 (24)	37 49 53 54 56 58 65 *
	Health in general	9 (36)	38–40 47 48 50 57 61–63 75 *
	Health services research	5 (20)	46 49 56 58 59 64 *
Level of prioritisation†	Institutional	7 (28)	37 38 41 43 46–48 62 64 67 *
	Subnational	7 (28)	39 40 47 49 52 54 56 59 62 *
	National	20 (80)	37–41 43–48 50 51 53 55 57–59 61–65 67 *
	Regional	5 (20)	37 38 46–48 62 *
	International	7 (28)	37–40 46 48 60 62 65 75 *
Funding†	Governmental	10 (40)	41 43 51–53 55 57 59 60 63 64 67 *
	Intergovernmental	2 (8)	37 75
	Private not for profit	6 (24)	49–51 53–56 *
	Private for profit	–	–
	Not reported	10 (40)	38–40 44–48 58 61 62 65 *
Type of publication	Peer review	18 (72)	37 44 46 49–56 58–65 *
Type of publication	Grey literature	7 (28)	41 44–46 48 53 54 57 62 63 67 *

*More than one study reporting on the same approach.
†Percentages add up to more than 100% as more than one option applies.