Fig. 2.

Flow chart of study selection.

The number of articles identified through database searching and screening by title and abstract shown in grey apply to the overall search; as per protocol the database search included search terms for all ten specific pricing policies among which policies promoting price transparency was one. The lower part of the flow chart shown in white is specific to the selection of studies on policies promoting price transparency. WoS=Web of Science.

*Two articles are part of the same study, but were published separately. These references are considered one study.