What question did this study set out to answer?

The study aims to analyze the incidence and characteristics of acute respiratory illness in a community over six years.

January 14, 1974

Acute Respiratory Illness in an American Community

Key Points

The study aims to analyze the incidence and characteristics of acute respiratory illness in a community over six years.
Examined 14,600 cases of respiratory illness among 4,905 residents in Tecumseh, Mich.
Calculated annual incidence rates of respiratory illness, considering age and gender differences.
Isolated pathogens and studied correlations between illness frequency and socioeconomic factors.
Annual incidence rates of respiratory illness decreased with age, except for individuals aged 20-29.
Rhinoviruses were the most common pathogens, followed closely by group A hemolytic streptococci.
Illness frequency was higher in families with educated heads of household but lower in families with higher income.

Abstract

Approximately 14,600 cases of respiratory illness in 4,905 residents of Tecumseh, Mich, were studied during a six-year period. The annual incidence of respiratory illness for each individual was calculated. Rates decreased with age except during the 20- to 29-year decade. In children less than 3 years of age, males experienced more illnesses than females; in those older than that, the reverse was true. Frequency of physician consultation varied with illness type. Rhinoviruses were the most frequently isolated pathogen from all illnesses. From those associated with physician consultation, group A hemolytic streptococci were nearly as frequently isolated. More illnesses started on Monday than on any other day of the week. Illness frequency increased with education of head of household, but decreased with family income. Therefore, highest rates were observed in more educated families with low income.

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