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Medication Safety, v3
CI 5.3: Warfarin – written drug information upon discharge (H)
Rationale
Warfarin is a widely used drug with a narrow therapeutic index and with potentially serious
adverse reactions such as spontaneous bleeding.
Numerator
Denominator
Total number of patients discharged on warfarin who receive written drug information prior
to discharge
Total number of non same-day separations receiving warfarin as an inpatient
Year
Dimensions of care: Accessibility Appropriateness Continuity
Effectiveness Quality Improvement and Risk Safety
Desirable level: Low High Not specified
Type of Indicator: Process Outcome Structure
No.
HCOs
Total
numerator
Total
denominator
Rate #
Rate#
(20)
Rate #
(80)
Centile
Gains
Stratum
Gains
Outlier
Gains
2004 18 385 420 91.7 85.1 99.2 31 17 17
2005 29 665 779 85.4 86.9 99.5 110 70 72
2006 24 483 509 94.9 96.2 99.3 22 16
2007 30 542 734 73.8 78.1 98.8 183 89 116
2008 27 619 807 76.7 61.0 96.9 163 74
2009 23 549 689 79.7 88.6 96.6 116 105 26
2010 25 577 652 88.5 82.1 97.6 60 7
2011 20 2,296 2,728 84.2 27.9 99.0 404 87 129
#per 100 patients
In 2011 there were 25 submissions from 20 HCOs. The annual rate was 84.2 per 100 patients.
Trends
The fitted rate deteriorated from 86.0 to 82.6, a change of 3.4 per 100 patients.
Rates and centiles by year
A High rate is desirable
80 th centile rate
x
Aggregate rate
Period average rate
Fitted rate
20 th centile rate
Australasian Clinical Indicator Report 2004–2011 Page 15
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