RT Journal Article SR Electronic T1 Increased rates of illness and death from asthma in Canada JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 620 OP 624 VO 137 IS 7 A1 Y. Mao A1 R. Semenciw A1 H. Morrison A1 L. MacWilliam A1 J. Davies A1 D. Wigle YR 1987 UL http://www.cmaj.ca/content/137/7/620.abstract AB Recent rates of illness and death from asthma in Canada and rates of hospital admission/separation for asthma were examined by age group and region. The death rates were higher in 1982-84 than in 1970-72, especially among those aged 15 to 34 years. Increases were also noted in hospital admission/separation rates, especially among those less than 15 years of age. Hospital admission/separation rates were highest in the Maritime provinces and Saskatchewan, whereas death rates were highest in Alberta and Saskatchewan. Examination of death certificates for coding errors and recoding of certificates to a single (8th) revision of the International Classification of Diseases indicated that changes in disease coding and errors in coding did not account for the significant increase in rates of death from asthma for those aged 15 to 34 years. These increases in rates of illness and death from asthma are unexplained and warrant further investigation.