Table 4 Summary of the inclusion and exclusion criteria

Intervention

Ten pharmaceutical pricing policy interventions, as specified and defined in Table 1

Studies without one of the ten prespecified policy interventions

Outcome

Studies including price, volume, availability or affordability as primary outcome

Studies without one of the four primary outcomes

Study design

randomised trial, non-randomised trial, and observational studies with at least one comparator or counterfactual

All other study designs that do not include at least one comparator or specifying a counterfactual. These include case series.

Countries

All countries

None

Settings

All settings

None

Time period

2004–2019 (publication date)

Studies with publication date before 1 January 2004

Language

All languages

None