Two by two table for matching and non-matching cancer cases registered from 2007 to 2011 in the JGPN and NCR
| Cancer status according to NCR | |||
|---|---|---|---|
| Cancer status according to JGPN | Cancer present | Cancer absent | Total |
| Cancer present | 1720 | 1644 | 3364 |
| Cancer absent | 1119 | 237 906 | 239 025 |
| Total | 2839 | 239 550 | 242 389* |
*Population of the JGPN registered in the included EHR systems.
EHR, electronic health record; JGPN, Julius General Practitioners’ Network; NCR, Netherlands Cancer Registry.