Fig 1.
Identification of studies.
Table 1.
Reasons for exclusion at full text stage.
Fig 2.
Year of first publication of each COS study (n = 259).
Table 2.
The scope of included studies (n = 259).
Table 3.
The methods used to develop COS (n = 259).
Table 4.
Participant groups involved in selecting outcomes for inclusion in COS (n = 225).
Table 5.
Public participation detail where reported (n = 7).
Table 6.
Geographical locations of participants included in the development of each COS (n = 214).
Fig 3.
Number of COS studies that have included participants from each individual country throughout the world.
Table 7.
OECD DAC list of ODA recipient countries involved in the COS development process.