Are Data Partners taking pre-cautions to prevent circumvention of pseudonymisation?

For each dataset, the Data Partners have evaluated the appropriate low number suppression threshold to set and whether rounding on results should be applied (where a result of 18 would be reported as 20). Data partners have also been asked not to supply exact dates, but to convert them to the first of month for events (such as a diagnosis) and to a year (for dates of birth).