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Table 4 Model Comparison

From: Mendelian randomization: estimation of inpatient hospital costs attributable to obesity

Model

Continuous BMI

Binary Obesity

Marginal Effect

SE

P-Value

95% CI

Marginal Effect

SE

P-Value

95% CI

Low

High

Low

High

Naïve

21.611

0.652

< 0.001

20.333

22.889

205.527

7.183

< 0.001

191.449

219.604

TSLS

14.363

7.170

0.045

0.310

28.415

201.579

100.644

0.045

4.322

398.837

Two-Part Cost Model, OLS

15.312

12.112

0.206

−8.428

39.051

214.898

170.024

0.206

−118.345

548.140

Two-Part Cost Model, Gamma Family, Log Link

16.211

11.883

0.172

−7.079

39.500

227.519

166.773

0.172

−99.351

554.388

  1. Note: N = 479,134 for first stage of all models; N = 287,776 in second part of two-part cost models