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Notice to Readers: National Occupational Respiratory Mortality System

The National Occupational Respiratory Mortality System (NORMS), a recent addition to CDC's website, is a data storage and data retrieval system developed and maintained by the National Institute for Occupational Safety and Health, Division of Respiratory Disease Studies. The system contains national mortality data obtained annually since 1968 from the National Center for Health Statistics for asthma, chronic obstructive pulmonary disease, lung cancer, malignant mesothelioma, pneumoconiosis, tuberculosis, and other respiratory diseases and conditions.

This system offers a range of search options for generating tables, charts, and maps of the number of deaths, crude mortality rates, age-adjusted mortality rates, and years of potential life lost at national, state, and county levels for U.S. residents by age, race, and sex. In addition, users of NORMS can tabulate proportionate mortality ratios by usual industry and/or occupation at national and state levels.

NORMS can be useful for all persons interested in finding data on work-related lung disease mortality by time and place. NORMS data are available at

Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Health and Human Services.

References to non-CDC sites on the Internet are provided as a service to MMWR readers and do not constitute or imply endorsement of these organizations or their programs by CDC or the U.S. Department of Health and Human Services. CDC is not responsible for the content of pages found at these sites. URL addresses listed in MMWR were current as of the date of publication.

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This page last reviewed 9/9/2004