Author:
Slamowicz Ron,Erbas Bircan,Sundararajan Vijaya,Dharmage Shyamali
Abstract
Objective: We sought to examine potential predictors
of readmission after coronary artery
bypass graft (CABG) surgery.
Design/setting: We analysed routinely collected
data of CABG patients who have used the public
hospital system of Victoria, Australia from July 1998
to June 2003. In total, 6627 patients were selected
by linking records of elective surgery waiting time
data (Elective Surgery Information System), emergency
department data (Victorian Emergency Minimum
Dataset) and hospital discharge data
(Victorian Admitted Episodes Dataset).
Measurements: The outcome measures were 7-
day, 30-day and 6-month readmissions. Possible
predictors included were age, gender, Charlson
comorbidity index, waiting times, length of stay in
the hospital, and frequency of emergency department
(ED) visits before CABG surgery.
Results: 7.1%, 15.2%, and 32.3% of the study
population were readmitted at 7 days, 30 days and 6
months respectively. In a multivariable regression
model Charlson comorbidity index was associated
with 30-day (OR=1.18; 95% CI 1.11-1.24; P<0.01)
and 6-month readmission (OR=1.20; 95% CI 1.15-
1.26; P<0.01). Multiple ED visits were associated
with 7 day (OR=1.75; 95% CI 1.28?2.38; P<0.01),
30 day (OR=1.53; 95% CI 1.22-1.93; P<0.01) and
6 month (OR=1.80; 95% CI 1.49-2.18; P<0.01)
readmission. Waiting time was not a statistically
significant predictor of readmission.
Cited by
19 articles.
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