Incidence, utilization, and costs associated with acute respiratory conditions, United States, 1980

Acute respiratory conditions are common causes of health disturbance in the general population. They are generally self-limiting, although occasionally recurrent, and seldom result in large health care costs for each episode of illness. The National Medical Care Utilization and Expenditure Survey (NMCUES), conducted during 1980, provided an opportunity to assess the effect of acute respiratory conditions on utilization of medical services and on functional capability as well as the cost of related medical care. Acute respiratory conditions were reported by survey respondents and separated into five subgroups: colds, influenza, nasopharyngitis, otitis media, and lower respiratory infections. Allergic conditions and chronic respiratory disorders (tuberculosis, chronic obstructive pulmonary disease, and pneumoconioses) were excluded. The subgroupings of acute respiratory conditions appear to separate the disorders in a manner consistent with the epidemiologic characteristics of each condition. About one-half (50.4 percent) of the U.S. civilian noninstitutionalized population had one or more acute respiratory conditions during 1980. The highest rates for upper respiratory conditions (colds, influenza, nasopharyngitis, and otitis media) were reported for those under 18 years of age, and rates were lower in successively older groups. Lower respiratory infection rates were higher in the youngest and oldest groups. Despite a high incidence in the general population, most symptomatic episodes of colds, influenza, and nasopharyngitis did not result in ambulatory care visits or hospital admissions. Otitis media and lower respiratory infections were more often associated with medical visits. Acute respiratory conditions were associated with lower disability levels than the average for the U.S. civilian noninstitutionalized population during 1980 (5.9 restricted-activity days for acute respiratory conditions, compared with an overall average of 13.8 restricted-activity days). Persons with upper respiratory conditions (colds, influenza, otitis media, and nasopharyngitis) averaged 2.3 to 5.4 restricted-activity days, but persons with lower respiratory infections experienced an average of 8.2 restricted-activity days. Indirect costs attributed to acute respiratory conditions in 1980 were $7.7 billion for employed persons and $698 million for homemakers, for a total of $8.4 billion, about the same as total direct costs ($8.3 billion). These indirect costs were several times larger than the annual indirect costs estimated for either cardiovascular diseases or musculoskeletal diseases, two common chronic or recurrent condition groups. The high indirect costs reflect the high frequency of episodes in the general population during 1980 and the greater likelihood of associated bed-disability and work-loss days than for other conditions.(ABSTRACT TRUNCATED AT 400 WORDS)