Create an empty negative control outcome cohort set
Source:R/NegativeControlCohorts.R
createEmptyNegativeControlOutcomeCohortSet.RdThis function creates an empty cohort set data.frame for use
with generateNegativeControlOutcomeCohorts.
R/NegativeControlCohorts.R
createEmptyNegativeControlOutcomeCohortSet.RdThis function creates an empty cohort set data.frame for use
with generateNegativeControlOutcomeCohorts.