Population Qualitative Data

Population age groups

Paediatric Population (< 18 years)
Adolescents (12 to < 18 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 January 2023 there were 2,965,915 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 4.42% based on the UK population estimates of 67,081,000 from the Office of National Statistics (January 2023). Our CDM data include 2,965,378 after excluding 537 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 January 2023 included 24,021,212 patients of which 2,877,893 were flagged as not acceptable for clinical research. Our CDM data include 17,216,081 by excluding those and also patients with gender not equal to Male or Female (1,107), year of birth before 1875 (3), practice up-to-standard after the patient died of left the practice (410,502) or no observation (3,515,626). The numbers below refer to this CDM population.
Population

Population size

17216081

Active population size

2965378

Population by age group

Age groupPopulation sizeActive population size
Paediatric Population (< 18 years)
3125857
559117
Children (2 to < 12 years)
1842496
308705
Adolescents (12 to < 18 years)
945385
203500
Adults (18 to < 46 years)
7387619
1078103
Adults (46 to < 65 years)
3328871
754598
Elderly (≥ 65 years)
3373734
573560
Adults (65 to < 75 years)
1345905
304483
Adults (75 to < 85 years)
1146315
195948
Adults (85 years and over)
881514
73129
Median observation time

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

5.82

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

13.21