Table 3.

Scope of the four selected HEE quality appraisal instruments

	Quality appraisal instrument for economic evaluation	Quality appraisal instrument for systematic reviews
Trial-based economic evaluation	1,2	1,2,3
Model-based economic evaluation	1,2,4	1,2,4

1 QHES instrument [21].

2 BMJ guidelines [22].

3 CHEC list [23].

4 Philips guidelines [24].