Effect of dementia on 1‐year mortality in subdural hematoma: a preliminary analysis

1-year mortality appears 33% more likely in the dementia cohort, but the confidence interval is too wide to be conclusive. A sample size of 154 is needed for sufficient power (1-β=0.80, α=0.05) and to include covariates with an absolute std. mean difference of > 0.1 after PSM. Additional information: Funded by the Canadian Institutes of Health Research Micheal Smith Foreign Study Supplement (Funding reference number: FSS - 191081).