[Use of medical record linkage in epidemiologic studies].

The article presents two methods of records linkage, deterministic and probabilistic, applied in epidemiological studies and medical registers. Sources of selection bias linkage was considered. The modified deterministic linkage by random selection of one from non-unique records was elaborated. The quality of applied method of record linkage in survival analysis was empirically evaluated. Usefulness of record linkage in epidemiology was talked over.