National Longitudinal Mortality Study (NLMS)
| Tracking Information | |
|---|---|
| First Received Date ICMJE | May 25, 2000 |
| Last Updated Date | April 26, 2012 |
| Start Date ICMJE | July 1983 |
| Primary Completion Date | Not Provided |
| Current Primary Outcome Measures ICMJE | Not Provided |
| Original Primary Outcome Measures ICMJE | Not Provided |
| Change History | Complete list of historical versions of study NCT00005159 on ClinicalTrials.gov Archive Site |
| Current Secondary Outcome Measures ICMJE | Not Provided |
| Original Secondary Outcome Measures ICMJE | Not Provided |
| Current Other Outcome Measures ICMJE | Not Provided |
| Original Other Outcome Measures ICMJE | Not Provided |
| Descriptive Information | |
| Brief Title ICMJE | National Longitudinal Mortality Study (NLMS) |
| Official Title ICMJE | Not Provided |
| Brief Summary | To estimate probabilities of death by cause for a representative United States population, according to age, sex, race, occupation, industry, income, education, residence, country of birth, calendar year, and a number of other demographic and epidemiologic factors. The representative population is derived from selected Bureau of the Census files and is matched to the National Death Index maintained by the National Center for Health Statistics. The Bureau of the Census provides the data processing, coding and management necessary to complete this objective. |
| Detailed Description | BACKGROUND: The current National Longitudinal Mortality Study began in 1983 with agreements with the Census Bureau which prepared baseline files from surveys representative of the United States and with the National Center for Health Statistics which prepared the National Death Index identifying deaths in the baseline populations. The baseline population of over one million persons has been matched to the NDI on several occasions, resulting in approximately 100,000 deaths occurring in 1979 to 1989. Using available data, an analysis was conducted relating socio-economic characteristics to subsequent mortality. DESIGN NARRATIVE: The NLMS is a national study of mortality over time among selected Census Bureau population samples numbering about 2.4 million. The census samples are matched to the National Death Index (NDI) maintained by the National Center for Health Statistics. The NDI is a file of all U.S. deaths since 1979 and is used to determine which individuals in the Current Population Surveys (CPS) have died. The samples are matched every other year to obtain deaths among these cohorts. Death certificates are then purchased from the states and coded for causes of death and other data. Mortality rates by age, sex, race, national origin, occupation, industry, income, education, state of residence and other factors are then obtained. The follow-up period begins with 1979, the first year covered by the NDI and ends with 1998. The total number of deaths for these cohorts is estimated to be about 250,000. Census samples in the NLMS are being matched to the Centers for Medicare & Medicaid Services (CMS) medicare database. Hospitalization, physician, outpatient, and other CMS data will be incorporated into the NLMS database for all participants meeting the Medicare age eligibility criteria. The study continues through December, 2009. |
| Study Type ICMJE | Observational |
| Study Design ICMJE | Not Provided |
| Target Follow-Up Duration | Not Provided |
| Biospecimen | Not Provided |
| Sampling Method | Not Provided |
| Study Population | Not Provided |
| Condition ICMJE |
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| Intervention ICMJE | Not Provided |
| Study Group/Cohort (s) | Not Provided |
| Publications * |
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* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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| Recruitment Information | |
| Recruitment Status ICMJE | Completed |
| Enrollment ICMJE | Not Provided |
| Completion Date | December 2009 |
| Primary Completion Date | Not Provided |
| Eligibility Criteria ICMJE | No eligibility criteria |
| Gender | Male |
| Ages | Not Provided |
| Accepts Healthy Volunteers | No |
| Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects |
| Location Countries ICMJE | Not Provided |
| Administrative Information | |
| NCT Number ICMJE | NCT00005159 |
| Other Study ID Numbers ICMJE | 1031 |
| Has Data Monitoring Committee | Not Provided |
| Responsible Party | Not Provided |
| Study Sponsor ICMJE | National Heart, Lung, and Blood Institute (NHLBI) |
| Collaborators ICMJE | Not Provided |
| Investigators ICMJE | Not Provided |
| Information Provided By | National Heart, Lung, and Blood Institute (NHLBI) |
| Verification Date | April 2012 |
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ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |
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