Amongst the three time- varying risk models, treating each day as if it has the same risk produced an AUC of 0.71, distinguishing weekdays from weekends 0.69, improving further to 0.79 with the fine-grained temporal model.
Within the time-varying risk model set, the differential impact of admission at nights and weekends was explored by developing three separate models that 1/treated all days as having equal risk, 2/distinguished the risk of weekdays from weekends, or 3/modeled both daily and weekly periodicities in the risk of death following admission.
Three models were developed to predict death up to 7-days post-discharge: 1/a simple background risk model using age, gender; 2/a time-varying risk model for exposure to hospitalization (admission time, days in hospital); 3/ disease specific models (Charlson co-morbidity index, DRG).
For individual Americans, there are also issues of varying risk.
Do you call it time varying risk premiums or irrational exuberance?
The portfolios would be of varying risk levels, ranging from conservative to aggressive.
Where there are time varying risks associated with a health service for a particular patient group, specific modeling of that independent risk may be needed.
The second bundles together multiple projects with varying risk-return profiles.
With the goals of decreasing the incidence of both false positives and false negatives as well as reducing the time the assay takes, many alternatives to the 2-year rodent cancer risk models have been evaluated, with varying results.
Figs. 1 and 2 depict the estimated progression probabilities over time for individuals with NPDR, varying selected risk factors in the model.
Several studies have found that women tend to overestimate their chances of breast cancer, and the risk models used by clinicians can produce widely varying results.
