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Table 2 comparison of classical regression and GWR results

From: Variations in cardiovascular disease under-diagnosis in England: national cross-sectional spatial analysis

CHD

Classical regression

GWR

 

O against E

O = E+GP

O against E

O = E+GP

Residual sum of squares

0.032

0.026

0.026

0.017

Standard deviation

0.010

0.009

0.009

0.007

Akaike Information Criterion

-2260.43

-2336.25

-2285.75

-2393.81

Correlation coefficient

0.299

0.439

0.427

0.637

Adjusted correlation coefficient

0.295

0.434

0.387

0.585

Sum of squares

0.0

0.0

0.0

0.0

Degrees of freedom

2.00

3.00

328.09

306.86

Hypertension

Classical regression

GWR

 

O against E

O = E+GP

O against E

O = E+GP

Residual sum of squares

0.374

0.250

0.362

0.241

Standard deviation

0.033

0.027

0.032

0.026

Akaike Information Criterion

-1400.41

-1539.57

-1403.50

-1543.67

Correlation coefficient

0.121

0.412

0.150

0.432

Adjusted correlation coefficient

0.116

0.407

0.134

0.421

Sum of squares

0.4

0.2

0.4

0.2

Degrees of freedom

2.00

3.00

344.87

344.04

Stroke

Classical regression

GWR

 

O against E

O = E+GP

O against E

O = E+GP

Residual sum of squares

0.007

0.006

0.005

0.003

Standard deviation

0.004

0.004

0.004

0.003

Akaike Information Criterion

-2807.25

-2873.16

-2838.92

-2932.93

Correlation coefficient

0.262

0.392

0.422

0.621

Adjusted correlation coefficient

0.258

0.387

0.374

0.561

 

Classical regression

GWR

 

O against E

O = E+GP

O against E

O = E+GP

Sum of squares

0.0

0.0

0.0

0.0

Degrees of freedom

2.00

3.00

324.37

302.87

  1. O against E: ratio of observed against expected prevalence
  2. O = E+GP: inclusion of GP supply as an additional independent variable