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Osteoarthritis incidence and trends in administrative health records from British Columbia, Canada Rahman, Md Mushfiqur; Cibere, Jolanda, 1962-; Goldsmith, Charlie H.; Anis, Aslam H. (Aslam Hayat), 1959-; Kopeć, Jacek A.

Abstract

Objectives Our objectives were to calculate the incidence rates of osteoarthritis (OA) and to describe the changes in incidence using 18 years of administrative health records. Methods We analyzed visits to health professionals and hospital admission records in a random sample (n = 640,000) from British Columbia (BC), Canada from 1991/92 through 2008/09. OA was defined in two ways: Def1) at least one physician diagnosis or one hospital admission; and Def2) at least two physician diagnoses in two years or one hospital admission. Crude and age-standardized rates were calculated, and the annual relative changes were estimated from the Poisson regression models. Results In 2008/09, the overall crude incidence rate (95% CI) of OA using Def1 was 14.6 (14.0-14.8) (12.5 (12.0-13.0) among men and 16.3 (15.8-16.8) among women) per 1000 person years. The rates were lower by about 44% under Def2. For the period 2000/01-2008/09, crude incidence rates based on Def1 varied from 11.8-14.2 per 1000 person years for men and from 15.7-18.5 for women. Annually on average, crude rates rose by about 2.5-3.3% for both men and women. The age-adjusted rates increased by 0.6-0.8% among men and showed no trend among women. Conclusions Our study generated updated incidence rates of administrative OA for the province of British Columbia. Physician diagnosed overall incidence rates of OA varied with the case definitions used, however trends were similar in both case definitions. Age-adjusted rates among men increased slightly during the period 2000/01-2008/09. These findings have implications for projecting future prevalence and costs of OA.

Item Metadata

Title
Osteoarthritis incidence and trends in administrative health records from British Columbia, Canada
Creator
Rahman, Md Mushfiqur; Cibere, Jolanda, 1962-; Goldsmith, Charlie H.; Anis, Aslam H. (Aslam Hayat), 1959-; Kopeć, Jacek A.
Contributor
Centre for Health Evaluation & Outcome Sciences
Date Issued
2014-04-15
Description
Objectives Our objectives were to calculate the incidence rates of osteoarthritis (OA) and to describe the changes in incidence using 18 years of administrative health records. Methods We analyzed visits to health professionals and hospital admission records in a random sample (n = 640,000) from British Columbia (BC), Canada from 1991/92 through 2008/09. OA was defined in two ways: Def1) at least one physician diagnosis or one hospital admission; and Def2) at least two physician diagnoses in two years or one hospital admission. Crude and age-standardized rates were calculated, and the annual relative changes were estimated from the Poisson regression models. Results In 2008/09, the overall crude incidence rate (95% CI) of OA using Def1 was 14.6 (14.0-14.8) (12.5 (12.0-13.0) among men and 16.3 (15.8-16.8) among women) per 1000 person years. The rates were lower by about 44% under Def2. For the period 2000/01-2008/09, crude incidence rates based on Def1 varied from 11.8-14.2 per 1000 person years for men and from 15.7-18.5 for women. Annually on average, crude rates rose by about 2.5-3.3% for both men and women. The age-adjusted rates increased by 0.6-0.8% among men and showed no trend among women. Conclusions Our study generated updated incidence rates of administrative OA for the province of British Columbia. Physician diagnosed overall incidence rates of OA varied with the case definitions used, however trends were similar in both case definitions. Age-adjusted rates among men increased slightly during the period 2000/01-2008/09. These findings have implications for projecting future prevalence and costs of OA.
Subject
Osteoarthritis; Incidence; Trend; Administrative databases; Epidemiology
Genre
Article; Postprint
Type
Text
Language
eng
Date Available
2020-01-10
Provider
Vancouver : University of British Columbia Library
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
DOI
10.14288/1.0388277
URI
http://hdl.handle.net/2429/73299
Affiliation
Medicine, Faculty of; Non UBC; Medicine, Department of; Population and Public Health (SPPH), School of
Peer Review Status
Reviewed
Scholarly Level
Faculty
Rights URI
http://creativecommons.org/licenses/by-nc-nd/4.0/
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Attribution-NonCommercial-NoDerivatives 4.0 International