Quantity

In DrugExposureDiagnostics: Diagnostics for OMOP Common Data Model Drug Records

options(rmarkdown.html_vignette.check_title = FALSE)
knitr::opts_chunk$set(
  warning = FALSE,
  message = FALSE,
  collapse = TRUE,
  comment = "#>"
)

Run the quantity check

library(DrugExposureDiagnostics)
cdm <- mockDrugExposure()
result <- executeChecks(
  cdm = cdm,
  checks = "quantity"
)

Quantity Overall

This shows the quantity of the drug records summarised on ingredient level. The quantity is not a required field, but it is a most useful field. How the quantity is filled depends on the drug strength pattern. For quantified drugs (where the denominator_value is not missing), the quantity identifies the number of packages / items (in case of multiple dose packages). However, in case of non-quantified drugs (where the denominator_value is missing), the quantity identifies the volume / total number of actuations or others dispensed / prescribed.

DT::datatable(result$drugQuantity,
  rownames = FALSE
)

| Column | Description | :------------- | :------------- | ingredient_concept_id | Concept ID of ingredient. | ingredient | Name of drug ingredient. | 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. | minimum_drug_exposure_quantity | Minimum drug exposure quantity. | q05_drug_exposure_quantity | 5th quantile for drug exposure quantity. |
q10_drug_exposure_quantity | 10th quantile for drug exposure quantity. |
q25_drug_exposure_quantity | 25th quantile for drug exposure quantity. |
median_drug_exposure_quantity | Median drug exposure quantity. |
q75_drug_exposure_quantity | 75th quantile for drug exposure quantity. |
q90_drug_exposure_quantity | 90th quantile for drug exposure quantity. |
q95_drug_exposure_quantity | 95th quantile for drug exposure quantity. |
maximum_drug_exposure_quantity | Maximum drug exposure quantity. |
result_obscured | TRUE if count has been suppressed due to being below the minimum cell count, otherwise FALSE. |

Quantity by concept

This shows the quantity of the drug records on the drug concept level. The quantity is not a required field, but it is a most useful field. How the quantity is filled depends on the drug strength pattern. For quantified drugs (where the denominator_value is not missing), the quantity identifies the number of packages / items (in case of multiple dose packages). However, in case of non-quantified drugs (where the denominator_value is missing), the quantity identifies the volume / total number of actuations or others dispensed / prescribed. 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. |

DT::datatable(result$drugQuantityByConcept, rownames = FALSE)

DrugExposureDiagnostics documentation built on Sept. 16, 2025, 9:11 a.m.