Table 1. Characteristics of the Dutch general practice registration networks included in this study.
| GPRN abbreviation | GPRN name; description/region | Time period | Population | Number of general practices or health care centers |
|---|---|---|---|---|
| NIVEL-PCD | Netherlands Institute for Health Services Research Primary Care Database; nationwide | 2002–2013 | 394,360 | 400 |
| IPCI | Integrated Primary Care Information; nationwide | 2003–2014 | 315,311 | 307 |
| JHN | Julius General Practitioners Network; GPs associated with Utrecht university | 2000–2013 | 34,949 | 25 |
| RNH | Registration Network Family Practices; Limburg | 1991–2011 | 23,208 | 22 |
| SMILE | Study of Medical Information and Lifestyles in Eindhoven; Eindhoven | 2004–2012 | 13,855 | 9 |
| RNUH-LEO | Registration Network University Practices Leiden and Environment; GPs associated with Leiden University | 1999–2013 | 10,143 | 4 |
| HAG | HAGnet AMC; GPs associated with the Academic Medical Center Amsterdam | 1999–2013 | 8,184 | 6 |
| CMR | Continuous Morbidity Registration Nijmegen; GPs associated with Nijmegen University | 1986–2011 | 3,072 | 4 |
| Trans | Transitieproject; regional network of GPs in Amstelveen and Friesland | 1995–2008 | 2,969 | 5 |
| Total | 1986–2014 | 806,051 | 782 |
Population is defined as total (alive, registered) older population (age ≥ 60 y) of the GPRN in the most recent year of provided data.
GP, general practitioner; GPRN, general practitioner registration network.