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Table 1 Comparison of marginal effects of Tobit, Tweedie, Poisson, and two-part (Binomial/Gamma and Binomial/GenG) models on the RAND HIE data

From: Tweedie distributions for fitting semicontinuous health care utilization cost data

 

Tobit

Tweedie

Poisson

Two-part

 
       

Binomial

Gamma

GenG

 

Est.

SE

Est.

SE

Est.

SE

Est.

SE

Est.

SE

Est.

SE

Intercept

-212.276

118.391

883.966

112.936

94.892

94.754

-0.091

0.050

1260.155

132.253

861.167

66.452

age

2.274

1.135

1.481

1.067

1.064

0.934

0.002

0.001

1.083

1.222

1.652

0.606

disea

6.319

1.695

3.045

1.566

3.534

1.408

0.005

0.001

2.127

1.806

5.664

0.895

physlm

214.712

34.484

143.054

31.272

191.965

28.998

0.040

0.019

168.177

36.817

118.515

18.349

logc

-23.994

17.530

-9.577

16.520

-8.445

13.323

-0.023

0.008

-3.963

19.191

-19.759

9.494

idp

-7.057

34.130

10.661

32.162

-3.311

27.925

-0.008

0.016

14.492

37.642

26.614

18.545

lpi

-1.806

5.612

-5.907

5.251

-1.625

4.612

0.001

0.003

-7.198

6.087

-4.135

3.005

fmde

1.728

10.453

3.828

9.846

-0.086

8.550

0.001

0.005

4.595

11.310

0.862

5.614

linc

18.113

11.951

13.757

11.492

6.876

9.452

0.012

0.005

8.076

13.893

13.392

6.926

lfam

-12.640

23.245

-2.754

21.955

-15.670

18.987

0.007

0.011

-1.910

25.514

-22.502

12.599

female

138.240

26.417

82.600

25.001

66.654

21.586

0.116

0.013

68.471

28.453

71.842

14.100

black

-166.908

39.181

-72.274

37.161

-60.124

31.299

-0.129

0.016

-28.317

44.221

-85.676

22.035

educdec

0.150

4.556

-2.301

4.290

-2.869

3.736

0.005

0.002

-4.205

4.897

1.894

2.441

hlthg

-17.324

25.583

-13.963

24.077

-23.013

20.990

0.013

0.012

-20.765

27.486

-18.554

13.627

p

  

1.719

   

2

 

2

 

AIC

43649

37777

51495

2770

34482

33439

RMSE (5-CV)

573.26

568.14

572.33

 

568.60

568.23

 
  1. p is the estimated mean-variance power parameter