Wayne J Millar1. 1. Health Statistics Division, Statistics Canada, Ottawa, Ontario. wayne.millar@statcan.ca
Abstract
OBJECTIVES: This article examines trends in hip and knee replacement surgery between 1981/82 and 1998/99, focussing on procedures involving seniors. It also presents 1998/99 data on readmissions within 30 days. DATA SOURCES: Data on hip and knee replacement are from the Hospital Morbidity Database for 1981/82 through 1998/99. The Person-oriented Information Database is used to examine readmissions in 1998/99. Supplementary data on arthritis are from the 1998/99 National Population Health Survey. ANALYTICAL TECHNIQUES: Hospitalization rates were calculated by dividing the number of hip and knee surgery separations by the population estimates for the relevant age/sex group and multiplying by 100,000. Population estimates for 1998 were used to calculate age-adjusted hospitalization rates. MAIN RESULTS: Between 1981/82 and 1998/99, the numbers and rates of hip and knee replacement increased substantially, while length of stay for both procedures declined. By 1998/99, knee replacements outnumbered those for hip. Both procedures had relatively low in-hospital mortality and post-surgery complication rates.
OBJECTIVES: This article examines trends in hip and knee replacement surgery between 1981/82 and 1998/99, focussing on procedures involving seniors. It also presents 1998/99 data on readmissions within 30 days. DATA SOURCES: Data on hip and knee replacement are from the Hospital Morbidity Database for 1981/82 through 1998/99. The Person-oriented Information Database is used to examine readmissions in 1998/99. Supplementary data on arthritis are from the 1998/99 National Population Health Survey. ANALYTICAL TECHNIQUES: Hospitalization rates were calculated by dividing the number of hip and knee surgery separations by the population estimates for the relevant age/sex group and multiplying by 100,000. Population estimates for 1998 were used to calculate age-adjusted hospitalization rates. MAIN RESULTS: Between 1981/82 and 1998/99, the numbers and rates of hip and knee replacement increased substantially, while length of stay for both procedures declined. By 1998/99, knee replacements outnumbered those for hip. Both procedures had relatively low in-hospital mortality and post-surgery complication rates.
Authors: Tim D Spector; Philip G Conaghan; J Christopher Buckland-Wright; Patrick Garnero; Gary A Cline; John F Beary; David J Valent; Joan M Meyer Journal: Arthritis Res Ther Date: 2005-03-24 Impact factor: 5.156