Description

Anderson and Steinberg developed a model for predicting hospital readmissions in a patient receiving Medicare. The authors are from the Johns Hopkins University.


Patient selection: Medicare recipient being evaluated at the time of hospital discharge

 

Outcome: readmission to an acute care hospital within the next 60 days

 

Parameters from multivariate analysis:

(1) age in years

(2) gender

(3) race

(4) supplemental Medicaid coverage

(5) number of hospital discharges in the 60 days prior to current admission

(6) current admission for self-limited, non-chronic disease

(7) surgery performed during current admission

(8) reimbursement to the hospital in US dollars

(9) location of current hospital

(10) number of beds in current hospital

 

Parameter

Finding

Points

gender

female

0

 

male

1

race

White

0

 

non-White

1

supplemental Medicaid coverage

no

0

 

yes

1

reasons for current admission

not self-limited or chronic

0

 

self-limited, non-chronic

1

surgery performed

no

0

 

yes

1

location

urban

1

 

non-urban

0

hospital beds

>= 100

0

 

< 100

1

 

X =

= (-0.0048 * (age in years)) + (0.10908 * (points for gender)) - (0.14732 * (points for race)) + (0.21179 * (points for supplemental Medicaid)) + (0.46509 * (number of hospital discharges)) - (0.34245 * (current admission)) - (0.33536 * (surgery)) + (0.00005 * (reimbursement)) - (0.19647 * (points for hospital location)) + (0.16399 * (points for hospital size in beds)) - 0.1684

 

probability of hospital readmission to an acute care hospital within the next 60 days =

= 1 / (1 + EXP((-1)*X))

 

Limitations:

• Some variables like hospital reimbursment need to be adjusted for the interval change since 1985.

• The significance of bed size may have changed since 1985.


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