Figure 5.

Ability of longitudinal claims data to predict whether a lab test was performed, a test result was available, and the actual serum level for three biomarkers of cardiovascular risk*. * c-statistics were computed from multivariate logistic regression models including patient factors measured during 6 months before lipid-lowering treatment initiation; r2 measured were computed only among patients who had a lab test result available from linear regression including patient factors measured during 6 months before lipid-lowering treatment initiation, actual treatment choice, as well as cardiovascular events and death during follow-up

Schneeweiss et al. BMC Medical Research Methodology 2012 12:180   doi:10.1186/1471-2288-12-180
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