Much ado about two: reconsidering retransformation and the two-part model in health econometrics

Article Abstract:

Consideration of retransformation and the modified two-part model (M2PM) helps in dealing with health economics applications involving outcomes and covariates. With regards to M2PM, the use of an assumption that covariates are statistically independent is eliminated. Such assumption tend to offer little help or may even become counterproductive when a given equation is a nontrivial function of covariates.

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An empirical examination of the implications of assortative matching on the incidence of HIV

Article Abstract:

An empirical study of the implications of assortative matching trends founded on HIV status showed that HIV-positive individuals are estimated to be more than doubly prone as HIV-negative individuals to have HIV-positive partners. These finding suggest that the HIV incidence forecasts figures determined by conventional epidemiological prototypes should be reduced by roughly one-third.

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Costs and outcomes associated with alternative discharge strategies following joint replacement surgery: analysis of an observational study using a propensity score

Article Abstract:

Costs involved in different discharge strategies for joint replacement patients are examined in detail.

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