Modeling Semicontinuous Longitudinal Expenditures: A Practical Guide.

ABSTRACT:

Objective

To compare different strategies for analyzing longitudinal expenditure data that have a point mass at $0. We provide guidance on parameter interpretation, research questions, and model selection.

Data sources, study design, and data collection

One-part models, uncorrelated two-part models, correlated conditional two-part (CTP) models, and correlated marginalized two-part (MTP) models have been proposed for longitudinal expenditures that often exhibit a large proportion of zeros and a distribution of continuous, highly right-skewed positive values. Guidance on implementing and interpreting each of these model is illustrated with an example of longitudinal (2000-2003) specialty care expenditures of veterans with hypertension, drawn from Veterans Administration data.<

SUBMITTER: Smith VA 

PROVIDER: S-EPMC6056585 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature