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Table 1 Regression Estimates and Scoring of Predictive Risk Factors: Original Model and Bootstrapping Validation Model

From: Use of an electronic administrative database to identify older community dwelling adults at high-risk for hospitalization or emergency department visits: The elders risk assessment index

  Original Model Validation Model1
  Regression Estimate Standard Error P-value Score Regression Estimate Standard Error Score
Married -0.12 0.03 <. 01 -1 -0.12 0.04 -1
Age 70-79 0.11 0.04 <. 01 1 0.11 0.03 1
Age 80-89 0.31 0.04 <. 01 3 0.31 0.05 3
Age 90 or more 0.67 0.08 <. 01 7 0.67 0.10 7
1-5 hosp days in 2003 or 2004 0.55 0.04 <. 01 5 0.54 0.05 5
6 or more hosp days in 2003 or 2004 1.10 0.05 <. 01 11 1.10 0.07 11
History of Diabetes 0.17 0.04 <. 01 2 0.17 0.04 2
History of CAD/MI/CHF 0.31 0.04 <. 01 3 0.31 0.04 3
History of Stroke 0.23 0.05 <. 01 2 0.23 0.06 2
History of COPD 0.47 0.05 <. 01 5 0.48 0.07 5
History of Cancer 0.10 0.04 <. 01 1 0.10 0.04 1
History of Dementia 0.31 0.05 <. 01 3 0.31 0.06 3
  1. 1Estimate of each predictor is the mean of the regression coefficients of each predictor from 450 samples. Reported standard error is the standard error of the mean estimates.