Clinical Practice Research Datalink (CPRD) GOLD

01/02/2024
20/05/2026
Data source
Human
Primary care medical records
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Population Qualitative Data

Population age groups

  • Paediatric Population (< 18 years)
    • Adolescents (12 to < 18 years)
  • Adult and elderly population (≥18 years)
    • Adults (18 to < 65 years)
      • Adults (18 to < 46 years)
      • Adults (46 to < 65 years)
    • Elderly (≥ 65 years)
      • Adults (65 to < 75 years)
      • Adults (75 to < 85 years)
      • Adults (85 years and over)

Estimated percentage of the population covered by the data source in the catchment area

In CPRD GOLD December 2025 there were 2,281,011 current acceptable patients (i.e. registered at currently contributing practices that use Vision software, excluding transferred out, deceased patients and those flagged by CPRD as not acceptable for clinical research for data quality issues) equal to 3.40% based on the UK population estimates of 67,026,300 from the Office of National Statistics (mid-2023). Our Oxford OMOP CDM data include 2,184,890 after excluding some patients as described for the full population below: the percentage remains the same.

Description of the population covered by the data source in the catchment area whose data are not collected (e.g., people who are registered only for private care)

CPRD GOLD December 2025 included 24,637,260 patients of which we excluded in the following order:
- 2,921,294 flagged as not acceptable for clinical research
- 1,169 with gender not equal to Male or Female
- 3 with year of birth before 1875
- 3,808,915 with practice up-to-standard after the patient died or left the practice
- 4 with first registration date after the last collection date
- 256,871 with no observations
Our Oxford OMOP CDM data include the remaining 17,649,004 patients and the numbers below refer to this OMOP CDM population.
Family linkage
No information provided.
Population

Population size

17.649.004

Active population size

2.184.890

Population by age group

Age group Population size Active population size
Paediatric Population (< 18 years)
3.159.153
387.666
Children (2 to < 12 years)
1.857.078
208.789
Adolescents (12 to < 18 years)
966.186
148.848
Adults (18 to < 46 years)
7.583.541
820.811
Adults (46 to < 65 years)
3.393.488
543.167
Elderly (≥ 65 years)
3.512.822
433.246
Adults (65 to < 75 years)
1.389.462
228.904
Adults (75 to < 85 years)
1.198.583
150.140
Adults (85 years and over)
924.777
54.202
Median observation time

Median time (years) between first and last available records for unique individuals

5,90

Median time (years) between first and last available records for unique active individuals (alive and currently registered)

12,96