Table 1.

Search strategy for Medline.

#1	Health care
#2	Health service *
#3	#1 OR #2
#4	Use
#5	Utili *
#6	#4 OR #5
#7	#3 AND #6
#8	GP visits
#9	Hospital admission
#10	Hospitalization
#11	Specialist visits
#12	Doctor visits
#13	Physician visits
#14	General Practitioner visits
#15	#7 OR #8 OR #9 OR #10 OR #11 OR #12 OR #13 OR #14
#16	Andersen model

Note: The asterisk (*) is a truncation symbol. The number sign (#) refers to the search order.