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Table 3 Marginal probabilities and elasticities* of key policy variables: Percent change in dependent variable for a 10% increase in the independent variable

From: Factors associated with geographic variation in cost per episode of care for three medical conditions

 

Cataract

Knee degeneration

Benign prostatic neoplasm

Percent surgical episodes (mean)

17.9%

14.0%

6.99%

PCPs per 1000 pop.

−2.4% (−0.44%)

−1.2% (−0.18%)

−3.9% (−0.28%)

Relevant specialists per pop.

3.9 (0.7)

3.4 (0.48)

2.7 (0.18)

Medicare part B payment ratio

16.9 (3.04)

3.6 (0.51)

2.7 (0.19)

Cost per episode (mean)

$581.71

$3,260.03

$559.14

PCPs per 1000 pop.

−1.95%

−0.45%

−0.46%

Relevant specialists per 1000 pop.

3.00

2.54

3.90

Medicare part B payment ratio

10.77

3.42

2.05

  1. *All calculated marginal probabilities and elasticities are based on coefficients that are statistically significant at p < .01. (See Table 2.)
  2. (Absolute change in probability in parentheses).