Check stability of outcome rate over time

Check stability of outcome rate over time

Usage

computeTimeStability(
  studyPopulation,
  sccsModel = NULL,
  maxRatio = 1.1,
  alpha = 0.05
)

Arguments

studyPopulation

An object created using the createStudyPopulation() function.

sccsModel

Optional: A fitted SCCS model as created using fitSccsModel(). If the model contains splines for seasonality and or calendar time these will be adjusted for before computing stability.

maxRatio

The maximum global ratio between the observed and expected count.

alpha

The alpha (type 1 error) used to test for stability.

Value

A tibble with one row and three columns: ratio indicates the estimated mean ratio between observed and expected. p is the p-value against the null-hypothesis that the ratio is smaller than maxRatio, and pass is TRUE if p is greater than alpha.

Details

DEPRECATED. Use checkTimeStabilityAssumption() instead.