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2006 National Healthcare Quality Report

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Table 2.38
Percent of patients with adverse drug events: anticoagulant related warfarin, United States, 2004a
    2004
Population group Exposed Adverse events Percent Standard error
Total 3,629 318 8.8 0.5
Age Under 65 345 32 9.3 1.6
65-74 1,203 87 7.2 0.7
75-84 1,499 135 9.0 0.7
85 and over 582 64 11.0 1.3
Gender Female 2,053 183 8.9 0.6
Male 1,576 135 8.6 0.7
Race Black 229 18 7.9 1.8
Other 116 11 9.5 2.7
White 3,284 289 8.8 0.5
Diabetes No 2,454 205 8.4 0.6
Yes 1,175 113 9.6 0.9
Obesity No 3,164 276 8.7 0.5
Yes 465 42 9.0 1.3
Cerebrovascular disease No 2,617 230 8.8 0.6
Yes 1,012 88 8.7 0.9
CHF/pulmonary edema No 2,106 165 7.8 0.6
Yes 1,523 153 10.0 0.8
COPD No 2,513 200 8.0 0.5
Yes 1,116 118 10.6 0.9
Smoking No 3,228 283 8.8 0.5
Yes 401 35 8.7 1.4
Cancer No 2,765 226 8.2 0.5
Yes 864 92 10.6 1.0
Corticosteroids No 3,340 277 8.3 0.5
Yes 289 41 14.2 2.1
Coronary artery disease No 1,831 127 6.9 0.6
Yes 1,798 191 10.6 0.7
Renal disease No 2,811 210 7.5 0.5
Yes 818 108 13.2 1.2

a Data include Medicare beneficiaries discharged from January to December. Readmissions are supposed to be counted in the numerators according to the measure specifications, but were not counted because the data were not available at this time.

Key: CHF: congestive heart failure; COPD: chronic obstructive pulmonary disease.

Source: Centers for Medicare & Medicaid Services, Medicare Patient Safety Monitoring System.

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