Here is an example of poor data quality (plausibility)
blood group+rh factor should have only values like A+,A-,AB+,AB-,etc…
Only those would be linked as ‘has-standard-answer’
In reality, we see a mess.
Including: normal, just negative or just A
The mantra is: quantitative lab tests have some plausible ranges, qualitative lab tests have some plausible values. The rest is flagged as “less plausible/desired” and if there is too much of less plausible data - DQD or Heel lets the research know !.
Snippet of 2020 Aug results from DQD Lab Thresholds study - described
here OHDSI Informatics Study: DQD Lab Thresholds
Data
