TY - JOUR
T1 - Ankylosing spondylitis in rochester, minnesota, 1935–1989. Is the epidemiology changing?
AU - Carbone, Laura D
AU - Cooper, Cyrus
AU - Michet, Clement J.
AU - Atkinson, Elizabeth J.
AU - Michael O'Fallon, W.
AU - Joseph Melton, L.
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1992/12
Y1 - 1992/12
N2 - Objective. To determine trends in the incidence and clinical presentation of ankylosing spondylitis first diagnosed between 1935 and 1989 among residents of Rochester, Minnesota, and in the survival of the patients. Methods. Population‐based descriptive study. Results. The overall age‐ and sex‐adjusted incidence rate was 7.3 per 100,000 person‐years (95% confidence interval 6.1–8.4). The rate tended to decline between 1935 and 1989, but there was little change in the age at symptom onset or diagnosis over the 55‐year study period. Overall survival was not decreased up to 28 years following diagnosis. Conclusion. These data indicate that there is a constancy in the epidemiologic characteristics of ankylosing spondylitis and suggest that previously study results indicating changes may have been due to biases in patient selection and study design.
AB - Objective. To determine trends in the incidence and clinical presentation of ankylosing spondylitis first diagnosed between 1935 and 1989 among residents of Rochester, Minnesota, and in the survival of the patients. Methods. Population‐based descriptive study. Results. The overall age‐ and sex‐adjusted incidence rate was 7.3 per 100,000 person‐years (95% confidence interval 6.1–8.4). The rate tended to decline between 1935 and 1989, but there was little change in the age at symptom onset or diagnosis over the 55‐year study period. Overall survival was not decreased up to 28 years following diagnosis. Conclusion. These data indicate that there is a constancy in the epidemiologic characteristics of ankylosing spondylitis and suggest that previously study results indicating changes may have been due to biases in patient selection and study design.
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U2 - 10.1002/art.1780351211
DO - 10.1002/art.1780351211
M3 - Article
C2 - 1472124
AN - SCOPUS:0027068817
SN - 0004-3591
VL - 35
SP - 1476
EP - 1482
JO - Arthritis & Rheumatism
JF - Arthritis & Rheumatism
IS - 12
ER -