# Drug Sig

## Run the Sig checks

    library(DrugExposureDiagnostics)
    library(dplyr)
    library(DT)

    # acetaminophen concept id is 1125315
    acetaminophen <- 1125315
    cdm <- mockDrugExposure()
    acetaminophen_checks <- executeChecks(
      cdm = cdm,
      ingredients = acetaminophen,
      checks = "sig"
    )

## Sig

This shows the sig(netur) of the drug records summarised on ingredient level. The signetur of a prescription contains the information of when, how often, and how much of a drug a patient shall use.

    datatable(acetaminophen_checks$drugSig,
      rownames = FALSE
    )

Column | Description
--- | ---
ingredient_concept_id | Concept ID of ingredient.
ingredient | Name of drug ingredient.
sig | The signetur of a prescription. The sig is usually only available for prescription and often contains free text or only semi-standardised information.
n_records | Number of records for ingredient concept. If n_records is the same as n_sample this means that there are more records but the number was cut at the pre-specified sample number for efficiency reasons.
n_sample | The pre-specified maximum sample. If n_records is smaller than the sample it means that sampling was ignored because the total number of records was already too small.
n_person | Number of individuals.
result_obscured | TRUE if count has been suppressed due to being below the minimum cell count, otherwise FALSE.

## Sig by concept

This shows the sig(netur) on the drug concept level. The signetur of a prescription contains the information of when, how often, and how much of a drug a patient shall use. The tables are identical to the overall just including two more columns at the beginning.

Column | Description
--- | ---
drug_concept_id | ID of the drug concept.
drug | Name of the drug concept.

    datatable(acetaminophen_checks$drugSigByConcept,
      rownames = FALSE
    )