Summary
Canadian patterns of morbidity and mortality from malignancies of the nasal cavities, the paranasal sinuses and the middle ear for the periods 1970–1980 and 1970–1984 have been examined. Age-standardized morbidity rates have not changed significantly during 1970–1980 for either males (P=0.65) or females (P=0.96). Analysis of age-specific morbidity rates revealed that rates of change for male rates have also remained stable during this period for all age groups studied (P>0.29). For females, rates of change for seven of eight age groups examined also failed to achieve statistical significance (P>0.30). However, rates for females aged 45–54 have shown an increase of 0.35 additional new cases per 1,000,000 population per year. This finding is of borderline significance (P=0.051). In contrast, age-standardied mortality rates have declined significantly during 1970–1984 by, on average, 0.08 and 0.07 fewer deaths per 1,000,000 population per year in males and females respectively. Analysis of age-specific mortality rates reveals that the declines in mortality are attributable to significant reductions in age-specific rates for males aged 65–74 and 85+ and females aged 0–24, 55–64, and 85+. In these groups rates have declined by as much as 4.1 fewer deaths per 1,000,000 population per year (P<0.045).
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Ayiomamitis, A., Parker, L. & Havas, T. The epidemiology of malignant neoplasms of the nasal cavities, the paranasal sinuses and the middle ear in Canada. Arch Otorhinolaryngol 244, 367–371 (1988). https://doi.org/10.1007/BF00497467
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DOI: https://doi.org/10.1007/BF00497467