Abstract
BackgroundOne of the national mortality databases in the U.S. is the Beneficiary Identification and Record Locator Subsystem (BIRLS) Death File that contains death dates of those who have received any benefits from the Department of Veterans Affairs (VA). The completeness of this database was shown to vary widely from cohort to cohort in previous studies. Three other sources of death dates are available in the VA that can complement the BIRLS Death File. The objective of this study is to evaluate the completeness and accuracy of death dates in the four sources available in the VA and to examine whether these four sources can be combined into a database with improved completeness and accuracy.MethodsA random sample of 3,000 was drawn from 8.3 million veterans who received benefits from the VA between 1997 and 1999 and were alive on January 1, 1999 according to at least one source. Death dates found in BIRLS Death File, Medical SAS Inpatient Datasets, Medicare Vital Status, and Social Security Administration (SSA) Death Master File were compared with dates obtained from the National Death Index. A combined dataset from these sources was also compared with National Death Index dates.ResultsCompared with the National Death Index, sensitivity (or the percentage of death dates correctly recorded in a source) was 77.4% for BIRLS Death File, 12.0% for Medical SAS Inpatient Datasets, 83.2% for Medicare Vital Status, and 92.1% for SSA Death Master File. Over 95% of death dates in these sources agreed exactly with dates from the National Death Index. Death dates in the combined dataset demonstrated 98.3% sensitivity and 97.6% exact agreement with dates from the National Death Index.ConclusionThe BIRLS Death File is not an adequate source of mortality data for the VA population due to incompleteness. When the four sources of mortality data are carefully combined, the resulting dataset can provide more timely data for death ascertainment than the National Death Index and has comparable accuracy and completeness.
Highlights
One of the national mortality databases in the U.S is the Beneficiary Identification and Record Locator Subsystem (BIRLS) Death File that contains death dates of those who have received any benefits from the Department of Veterans Affairs (VA) since the early 1970s
Mortality data available in the VA The BIRLS is a VA database that contains information on all VA beneficiaries, including veterans discharged from military service since March 1973, Medal of Honor recipients, veterans who received education benefits from the VA, and veterans whose survivors applied for burial benefits [11]
One limitation of this study is that we examined death dates for a limited time frame (1999 – 2002), while death dates in the BIRLS Death File precede the 1970s and those in the Security Administration (SSA) Death Master File precede the 1940s [11]
Summary
One of the national mortality databases in the U.S is the Beneficiary Identification and Record Locator Subsystem (BIRLS) Death File that contains death dates of those who have received any benefits from the Department of Veterans Affairs (VA) The completeness of this database was shown to vary widely from cohort to cohort in previous studies. One of the national mortality databases in the U.S is the Beneficiary Identification and Record Locator Subsystem (BIRLS) Death File that contains death dates of those who have received any benefits from the Department of Veterans Affairs (VA) since the early 1970s This database has been widely used as the main source of death dates for veterans who received health care from the VA [1,2,3,4,5]. It is the newest source of mortality data for veterans which became available in the VA in 1999
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