Mendelian randomization: estimation of inpatient hospital costs attributable to obesity

Health Economics Review

Table 4 Model Comparison

Model	Continuous BMI					Binary Obesity
	Marginal Effect	SE	P-Value	95% CI		Marginal Effect	SE	P-Value	95% CI
	Marginal Effect	SE	P-Value	Low	High	Marginal Effect	SE	P-Value	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

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

ISSN: 2191-1991