Fast and optimal algorithm for case-control matching using registry data: application on the antibiotics use of colorectal cancer patients Hasselt University KU Leuven
Background In case-control studies most algorithms allow the controls to be sampled several times, which is not always optimal. If many controls are available and adjustment for several covariates is necessary, matching without replacement might increase statistical efficiency. Comparing similar units when having observational data is of utter importance, since confounding and selection bias is present. The aim was twofold, firstly to create a ...