Table 3

The difference in the number of strokes expected, comparing actual and ideal treatments, in the first and second audits

Risk of strokeTotal No of patientsActual treatmentActual expected strokesIdeal treatmentIdeal expected strokesActual ideal difference in strokes
WarfarinAspirinNoneWarfarinAspirinNone
First audit
 High15659425510.11395126.04.1
 Moderate2328130.702030.40.3
 Low6222000600
Total10.86.44.4
Second audit
 High1507452248.11113546.31.9
 Moderate35418130.803140.60.2
 Low0000
Total8.96.82.1