selectSubjectsToInclude: Select subjects to include
In OHDSI/CaseCrossover: Case-Crossover

Description Usage Arguments Details Value References

Select subjects to include

selectSubjectsToInclude(
  caseCrossoverData,
  outcomeId,
  firstOutcomeOnly = TRUE,
  washoutPeriod = 180,
  matchingCriteria = NULL,
  minAge = NULL,
  maxAge = NULL
)

`caseCrossoverData`	An object of type `caseCrossoverData` as generated using the `getDbCaseCrossoverData` function.
`outcomeId`	The outcome ID of the cases for which we need to pick controls.
`firstOutcomeOnly`	Use the first outcome per person?
`washoutPeriod`	Minimum required numbers of days of observation for inclusion as either case or control.
`matchingCriteria`	If provided, a case-time-control analysis will be performed and controls will be matched based on these criteria.
`minAge`	Minimum age at which patient time will be included in the analysis. Note that information prior to the min age is still used to determine exposure status after the minimum age (e.g. when a prescription was started just prior to reaching the minimum age). Also, outcomes occurring before the minimum age is reached will be considered as prior outcomes when using first outcomes only. Age should be specified in years, but non-integer values are allowed. If not specified, no age restriction will be applied.
`maxAge`	Maximum age at which patient time will be included in the analysis. Age should be specified in years, but non-integer values are allowed. If not specified, no age restriction will be applied.

Subject to include in the study are selected for a specific outcome, optionally filtering using a washout period, restricting to first occurrences of the outcome only, and restricting on age. If matching criteria are provided controls will be selected for each case. These controls will be used to adjust for time trends in exposure, turning the analysis into a case-time-control analysis (Suissa, 1995).

A data frame with these columns: