Optimum Patient Care Research Database

01/02/2024
31/03/2026
Data source
Human
Other
Primary care medical records
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Population Qualitative Data

Population age groups

  • Paediatric Population (< 18 years)
    • Neonate
      • Preterm newborn infants (0 – 27 days)
      • Term newborn infants (0 – 27 days)
    • Infants and toddlers (28 days – 23 months)
    • Children (2 to < 12 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

26,612,724 (unique) / 69,850,295 (total) = 38% (population size)
11,710,365 / 69,850,295 (total) = 17% (population size)
(source: https://www.worldometers.info/world-population/uk-population/)
(The current population of the United Kingdom is 69,850,295 as of Tuesday, March 24, 2026)

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)

All population at each consented practice site with an opt-out code and the population of sites not consented into the OPC network.
Family linkage

Family linkage available in the data source permanently or can be created on an ad hoc basis

Ad hoc
Population

Population size

26612724

Active population size

11710365

Population by age group

Age group Population size Active population size
Paediatric Population (< 18 years)
2949167
1958238
Infants and toddlers (28 days – 23 months)
91924
85095
Children (2 to < 12 years)
1711604
1190572
Adolescents (12 to < 18 years)
1145639
682571
Adults (18 to < 46 years)
9728058
4379886
Adults (46 to < 65 years)
6021843
2776087
Elderly (≥ 65 years)
7913656
2596154
Adults (65 to < 75 years)
2337111
1170838
Adults (75 to < 85 years)
2053025
918194
Adults (85 years and over)
3523520
507122
Median observation time

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

11.68

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

15.74