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Table 3 Explanatory variables of diffusion of bariatric surgery, by category (n = 148)

From: Bariatric surgery implementation trends in the USA from 2002 to 2012

 

Univariate models

Domain models

Final model

 

Param. Est. β (SE)

Param. Est. β (SE)

Param. Est. β (SE)

Time

Intercept

0.0318 (0.0077)*

 

0.3203 (0.1098)*

Year

−0.0047 (.0015)*

  

Environment

Intercept

NA

0.0532 (0.0296)

 

Obesity

−0.0017 (0.0008)*

−0.0006 (0.0009)

 

Medicare NCD

−0.0245 (0.0091)

  

Cum. surgery rate

−0.00007 (0.00002)*

−0.00006 (0.00002)*

−0.0001 (0.00004)*

Recession year

0.0099 (0.011)

  

Population

Intercept

NA

0.2054 (0.0986)*

 

Age group 50–59

−0.0098 (0.0031)*

−0.0088 (0.0032)*

−0.0113 (0.0043)*

Black

0.00029 (0.0005)

  

Diabetes

−0.0027 (0.0019)

  

High school educ.

−0.00004 (0.0007)

  

Hispanic

−0.0005 (0.0005)

  

Income

−0.0007 (0.0005)

  

Private insurance

0.0009 (0.0004)*

0.0005 (0.0004)

 

Medical practice

Intercept

NA

0.0208 (0.0066)*

 

Center of excellence

−0.0058 (0.0029)*

−0.0058 (0.0029)*

0.0185 (0.0063)*

MD champ

−0.0073 (0.0070)

  
  1. R 2 = 0.1376 (final model)
  2. *p < 0.05