5. Cost data for preoperative medical testing.

Study	Treatment group	Total number of exams	Average number of exams per patient	Total cost for preoperative testing	Total cost for preoperative testing per patient	Ratio of preoperative testing cost per patient Pre‐testing: no pre‐testing
Lira 2001	Preoperative testing group	1536	3.00	BRL 5632.00	BRL 11.00	2.55
	Selective or no preoperative testing group	604	1.18	BRL 2214.66	BRL 4.32