The IPCI contains routinely collected data from computer-based patient records of a selected group of General Practices throughout the Netherlands. The current database includes patient records from 2006 onwards. The main aim of IPCI is to enable medical research. In addition, reports are generated to inform GPs and their organizations about the provided care. General practices included in IPCI are mainly located in the middle of the country, including the most densely populated area (the ‘Randstad’) and some non-urban areas. IPCI is a dynamic database in which patients are included from the date they are registered at a GP practice and remain in the database until death or leaving the practice. IPCI contains over 2.5 million patient records with a median follow-up duration of 4.7 years. Every 6 months, a new version of the IPCI database is released, but additional releases can be made if necessary for certain research questions.

Recruitment is ongoing