Table 3.

Summary of typhoid vaccine economic evaluation types.

Characteristic	Number of studies (n = 7)	Reference
Based on field studies	5	[27], [28], [29], [30], [31]
Perspective:
Public sector only	2	[27], [32]
Private only	1	[29]
Societal (public and private)	4	[28], [29], [30], [31], [33]
Include intangible costs of pain, suffering and disability	3	[28], [30]
Analytical approach: (a study can include more than one approach)
Cost-benefit analysis component	4	[29], [30], [31], [32]
Cost-effectiveness analysis component	2	[27], [32]
Cost-utility analysis component	2	[30], [33]
Willingness-to-pay component	4	[27], [28], [29]
Price-optimisation model	1	[27]
Include indirect protection of vaccines	1	[27]
Include transmission dynamics	0
Evaluates improve sanitation, hygiene or water supply as an alternative to or adjunct to vaccination	0