Nivel Primary Care Database

01/02/2024
22/06/2026
Data source
Human
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

8-10%

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)

We collect data from Dutch citizens registered at GPs participating in Nivel Primary Care Database. We do not collect data from patients of other GPs, and from patients not registrered at a GP. Almost all Dutch citizens are registered at a GP, exceptions are patients living in nursing homes for example.
Family linkage

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

Ad hoc
Population

Population size

4238761

Active population size

1566633

Population by age group

Age group Population size Active population size
Paediatric Population (< 18 years)
747262
283567
Infants and toddlers (28 days – 23 months)
81244
24136
Children (2 to < 12 years)
419220
158030
Adolescents (12 to < 18 years)
246798
101401
Adults (18 to < 46 years)
1576633
522515
Adults (46 to < 65 years)
992721
402582
Elderly (≥ 65 years)
922145
357969
Adults (65 to < 75 years)
442243
190225
Adults (75 to < 85 years)
316276
129146
Adults (85 years and over)
163626
38598
Median observation time

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

4.25

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

7.00