Population Qualitative Data

Population age groups

Paediatric Population (< 18 years)
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)
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% of Dutch population

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)

GP practices included in the IPCI database are mainly located in the central part of the country, including the most
densely populated area (the ‘Randstad’) but also non-urban
areas. The IPCI database is a dynamic database in which
patients are included from their registration at the GP practice until death or leaving the practice. In total, the database
currently (1 January 2024) contains 2.9 million patients records
with a median follow-up duration of 4.7 years. The number
of active patients is 1.3 million, which comprises 7.2% of
the Dutch population of 18 million.
Population

Population size

2870221

Active population size

1313422

Population by age group

Age groupPopulation sizeActive population size
Paediatric Population (< 18 years)
524570
252964
Infants and toddlers (28 days – 23 months)
62402
24208
Children (2 to < 12 years)
293018
141309
Adolescents (12 to < 18 years)
169150
87447
Adults (18 to < 46 years)
1082616
453695
Adults (46 to < 65 years)
65287
338701
Elderly (≥ 65 years)
597748
268062
Adults (65 to < 75 years)
284982
143600
Adults (75 to < 85 years)
205987
95546
Adults (85 years and over)
106779
28916
Median observation time

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

4.70

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

6.50