TABLE 1.

Agreement between the coronary artery bypass graft (CABG) counts from the Canadian Institute for Health Information (CIHI)’s databases and provincial cardiac registries, 2004^*

Province	CABG count, n			Agreement§, %
	CIHI database†	Cardiac registry	Absolute difference‡
British Columbia	2115	2087	28	98.7
Alberta	1812	1807	5	99.7
Saskatchewan¶	535	539	4	99.3
Manitoba	898	850	48	94.4
Ontario	9213	9114	99	98.9
Nova Scotia	885	872	13	98.5
Newfoundland and Labrador	612	609	3	99.5
Overall	16,070	15,878	192	98.8

^*Fiscal year (ie, April 1, 2004, to March 31, 2005) for all provinces;

^†Discharge Abstract Database;

^‡Absolute difference = |CIHI count – cardiac registry’s count|;

^§Per cent agreement = 100% – (absolute difference / cardiac registry’s count) × 100;

^¶Limited to Regina Qu’Appelle Regional Health Authority