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. 2017 Sep 29;15:35. doi: 10.1186/s12963-017-0152-2

Table 5.

Estimated results for regressions using diabetes as dependent variable

Variable OLS Robust Estimation
Obesity rate 0.1329*** 0.0981***
Hypertension rate 0.0279 0.0221*
Ln(GDP) 0.0036* 0.0023*
Ln(wage) 0.0066 0.0051*
Health center density 0.0037*** 0.0023***
Hospital density −0.0063* −0.0055**
Household size −0.0064* 0.0004
Gender −0.001 −0.0005
Age 0.0022*** 0.0013***
East 0.0064* 0.0031*
Middle 0.0008 0.0007
North 0.0024 0.0014
Constant −0.0152 −0.0709***
F (Wald) test for all variables 24.07*** 37.60***
R square 0.5124
Adjusted R square 0.4911
Hausman Test for two regressions χ2-statistic—46.22***
Skewness/Kurtosis test for Normality χ2-statistic—18.81***
Shapiro-Wilk W test for Normality z-statistic—8.615***
Shapiro-Francia W test for Normality z-statistic—7.829***

Note: The null hypothesis for F or Wald test is that the concerned coefficients are jointly equal to zero. The null hypothesis for normality test is the normal distribution of the model

*, **, and *** give the coefficients’ significance indicated by estimated standard errors or bootstrap standard errors at 10%, 5% and 1% level individually