Table 4.

Inter-practice variation in quality of care scores for hypertension and stroke according to caseload.

BP Caseload	BP2*	BP3*	BP4*	BP5*	CVA caseload	CVA2*	CVA3*	CVA4*	CVA5*	CVA6*	CVA7*	CVA8*	CVA9*	CVA10*
1: Less than 281	92.6	92.0	88.5	71.0	1: Less than 28	63.4	92.6	88.5	93.6	81.3	80.8	59.7	88.1	82.9
2: 281 to 477	94.0	93.5	89.9	72.1	2: 28 to 54	75.6	93.4	91.0	94.7	81.3	83.6	62.1	88.8	83.9
3: 478 to 728	94.4	94.3	90.1	71.7	3: 55 to 95	80.7	93.6	90.4	95.1	81.8	85.2	63.7	89.6	84.5
4: 729 to 1070	94.4	94.2	90.3	71.5	4: 96 to 149	84.9	93.2	89.8	95.2	81.7	85.2	64.1	90.0	84.5
5: 1071 or More	94.4	94.6	90.3	71.2	5: 150 or More	86.0	92.6	89.4	95.1	81.3	84.4	63.1	89.5	84.4

See Table 1 for explanation of abbreviations

*Percentage achievement in 5 groups significantly different using Kruskal Wallis exact test (P < 0.0001)