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Table 1 Listing of all simulation scenarios and the abbreviated name used in the “Results” section

From: Dynamic updating of clinical survival prediction models in a changing environment

Group

Description

Scenario name

Reference scenario

 

Constant baseline hazard; event rate 5% per year

Constant events

Scenarios with calibration drift

 

Decreasing baseline hazard; event rate decreased from 5% per year in the first period to 2% in the last period

Decreasing events

 

Increasing baseline hazard; event rate increased from 5% per year in the first period to 8% in the last period

Increasing events

Scenario with rare predictor

 

Rare risk factor for an event found in 1% of people over age 55

Rare-1%

Scenarios with new predictors

 

Treatment introduced in Q2, made available by age group

New treatment

 

Treatment introduced in Q2, made available by age group and to those with a comorbidity (5% of population)

New treatment + comorbidity