Using personal health insurance numbers to link the Canadian Cancer Registry and the Discharge Abstract Database.

摘要: Background Linking cancer registry and administrative data can reveal health care use patterns among patients. The Canadian Cancer Registry (CCR) contains personal insurance numbers (HINs) that facilitate linkage to hospitalization information in the Discharge Abstract Database (DAD). Data methods Valid HINs, captured CCR or obtained through probabilistic linkages provincial registries, were used deterministically link prostate, female breast, colorectal lung cancers diagnosed from 2005 2008 with DAD for fiscal years 2004/2005 2010/2011. Results At least 98% of tumours had valid HINs linkages. For provinces submitting day surgeries DAD, rates at one record higher breast (95.6% 98.1%), (96.9% 98.7%) (92.8% 96.3%) than prostate (77.2% 91.6%). Among linked records, agreement was high sex (99% more) complete date birth (97% more); likelihood a consistent diagnosis on (86.8% 97.2%), (94.6% 97.7%) (90.3% 95.5%) (77.4% 87.8%). Interpretation Deterministically linking using is feasible approach obtaining about