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Table 2 Estimation results, using ordinary least squares and spatial seemingly unrelated regression models

From: Medicare modernization and diffusion of endoscopy in FFS medicare

  OLS Model, 2001-2005 OLS Model, 2006-2009 SSUR Model, 2001-2005 SSUR Model, 2006-2009
  Coef. P > |t| Coef. P > |t| Coef. P > |t| Coef. P > |t|
Age 65-74a 0.013 0.112 -0.019 0.123 0.012 0.077 -0.016 0.144
Age 75-84a 0.059 0.000 -0.037 0.011 0.035 0.000 -0.042 0.002
Age 85 + a -0.110 0.000 -0.182 0.000 -0.077 0.000 -0.185 0.000
Femalea -0.002 0.850 0.120 0.000 -0.002 0.825 0.121 0.000
African American 0.019 0.000 0.018 0.000 0.016 0.000 0.016 0.000
Asian -0.042 0.127 0.005 0.851 -0.022 0.358 0.020 0.430
Hispanica -0.037 0.000 -0.001 0.960 -0.025 0.000 0.002 0.877
all othera -0.016 0.001 -0.023 0.000 -0.012 0.004 -0.023 0.000
Population density 0.000 0.989 0.000 0.481 0.000 0.979 0.000 0.539
Poor English -0.002 0.079 -0.004 0.028 -0.002 0.087 -0.003 0.031
Graduatea 0.087 0.000 0.035 0.000 0.065 0.000 0.023 0.000
Importance Medicarea 0.030 0.003 0.046 0.000 0.022 0.014 0.044 0.000
Average Poverty -0.032 0.000 -0.026 0.001 -0.030 0.000 -0.019 0.009
Distance endoscopy -0.026 0.000 -0.021 0.000 -0.021 0.000 -0.017 0.000
Dual/ESRD/disableda -0.024 0.000 -0.041 0.000 -0.021 0.000 -0.043 0.000
MA plan penetration -0.005 0.009 -0.004 0.182 -0.007 0.000 -0.004 0.073
Competition endoscopy 1.325 0.007 1.073 0.041 1.342 0.002 1.083 0.031
Spatial laga      0.029 0.000 0.019 0.000
  1. Numbers highlighted in bold indicate statistically significant estimates in each model
  2. aindicates a significant Wald test of parameter stability over time