As matching directly on observable characteristics is difficult if the set of potentially relevant characteristics is large, matching on propensity scores has been proposed as a valid method (Rosenbaum and Rubin, 1983).
Endocrine disturbances in HD and their link with disease severity have not been investigated previously in a large matched case-control study, despite their pathophysiological and clinical relevance [28].
An equally large matched control group was selected from the Swedish Population Register.
In some studies, NSAIDs and coxibs have lower rates of significant harm than opioids in large matched cohorts [ 9].
It would also be of interest examine other predictive factors of ulnar nerve compression in a larger matched case control study.
We present an updated analysis of breastfeeding and risk of breast cancer using a large matched sample of BRCA mutation carriers.
However, the evidence was limited and the review highlighted the need for further research comprised of a large, matched cohort study.
We selected samples from breast, colon and lung adenocarcinomas because large matched datasets were available for methylation, gene expression and copy number profiles.
In this large matched case-control study, a range of conditions were associated with increased risk of zoster, including rheumatoid arthritis, systemic lupus erythematosus, inflammatory bowel disease, chronic obstructive pulmonary disease, asthma, chronic kidney disease, type 1 diabetes, and depression.
Remarkably, in a recent large matched cohort study of critically ill adults with AKI requiring dialysis, Wald et al. [ 22] found that the initiation of CRRT is associated with a lower likelihood of chronic dialysis compared with IHD.
