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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