Table 1 Search queries used for target databases

Scopus

( ( TITLE-ABS-KEY ( “big data” )  OR TITLE-ABS-KEY ( “data mining” )  OR TITLE-ABS-KEY ( “deep learning” )  OR TITLE-ABS-KEY ( “artificial intelligence” )  OR TITLE-ABS-KEY ( “Expert system” )  OR TITLE-ABS-KEY ( “Intelligent system” )  OR TITLE-ABS-KEY ( “Knowledge system” ) OR TITLE-ABS-KEY ( “Decision Support System” ) OR TITLE-ABS-KEY ( “machine learning” ) ) )  AND  ( TITLE-ABS-KEY ( health ) )  AND  ( ( TITLE ( financing )  OR TITLE ( financial )  OR TITLE ( “social insurance” )  OR TITLE ( “government budget” )  OR TITLE ( finance )  OR TITLE ( GDP )  OR TITLE ( expenditure )  OR TITLE ( grant )  OR TITLE ( investment )  OR TITLE ( invest )  OR TITLE ( fund )  OR TITLE ( loan )  OR TITLE ( loans )  OR TITLE ( funds )  OR TITLE ( “health insurance” )  OR TITLE ( “strategic purchasing” )  OR TITLE ( “pooling of funds” )  OR TITLE ( “risk pooling” )  OR TITLE ( revenue )  OR TITLE ( tax )  OR TITLE ( “resource allocation” )  OR TITLE ( “purchasing of services” )  OR TITLE ( “revenue collection” ) ) )

Web of Sciences

(((((((((((((((((((((((TI=(financing)) OR TI=(financial)) OR TI=(“social insurance”)) OR TI=(“government budget”)) OR TI=(finance)) OR TI=(GDP)) OR TI=(Expenditure)) OR TI=(grant)) OR TI=(investment)) OR TI=(invest)) OR TI=(fund)) OR TI=(loan)) OR TI=(loans)) OR TI=(funds)) OR TI=(“health insurance”)) OR TI=(“strategic purchasing”)) OR TI=(“pooling of funds”)) OR TI=(“risk pooling”)) OR TI=(revenue)) OR TI=(tax)) OR TI=(“resource allocation”)) OR TI=(“purchasing of services”)) OR TI=(“revenue collection”))

(((((((((AB=(“Artificial intelligence”)) OR AB=(“machine learning”)) OR AB=(“data mining”)) OR AB=(“deep learning”)) OR AB=(“Expert system”)) OR AB=(“Intelligent system”)) OR AB=(“Knowledge system”)) OR AB=(“Decision Support System”)) OR AB=(“big data”))

AB=(health)

PubMed

((((((((“big data“[Title/Abstract]) OR (“data mining“[Title/Abstract])) OR (“deep learning“[Title/Abstract])) OR (“artificial intelligence“[Title/Abstract])) OR (“Expert system“[Title/Abstract])) OR (“Intelligent system“[Title/Abstract])) OR (“Knowledge system“[Title/Abstract])) OR (“Decision Support System“[Title/Abstract])) OR (“machine learning“[Title/Abstract]))))) AND ((((((((((((((((((((((((((((financing[Title]) OR (financial[Title])) OR (“social insurance“[Title])) OR (government budget[Title])) OR (finance[Title])) OR (GDP[Title])) OR (Expenditure[Title])) OR (grant[Title])) OR (investment[Title])) OR (invest[Title])) OR (fund[Title])) OR (loan[Title])) OR (loans[Title])) OR (funds[Title])) OR (“health insurance“[Title])) OR (“strategic purchasing“[Title])) OR (“pooling of funds“[Title])) OR (“risk pooling“[Title])) OR (revenue[Title])) OR (tax[Title])) OR (“resource allocation“[Title])) OR (“purchasing of services“[Title])) OR (“revenue collection“[Title])))))))))])