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Disparities in Utilization Rates of Total Knee and Hip Arthroplasty Among Racially Visible Populations in Canada: A
Bernard Burgesson1, Lynn Lethbridge1, David A Haase2
1Division of Orthopedic Surgery, Dalhousie University, Queen Elizabeth II Health Sciences Center, Halifax, Nova Scotia, Canada.
Background:
Published evidence on total hip arthroplasty (THA) and knee arthroplasty (TKA) among racially visible (RV) populations suggests inequities in utilization rates. The study's aim was to compare THA and TKA utilization rates in RV populations to the general population (non-RV). Additionally, we compared rates in populations of African descent (AD) to non-African descent (non-AD) population.
Methods:
The study population was identified from the 2016 Canadian long-form census, and minority status was self-reported. Statistics Canada and Canadian Institute of Health Information used personal information from multiple sources to construct a unique identifier, enabling accurate linkage across data sources. Census data captured key covariates including age, sex, and income. Procedures of THA and TKA were identified from the Discharge Abstract Database and National Ambulatory Care Reporting System. Multivariate logistic regression was employed in comparing utilization rates between groups, controlling for confounders including age, sex, and income. Chi-square statistics were used to test for statistically significant differences at a 95% confidence level.
Results:
The observed utilization rates for TKA and THA were lower for RVs and ADs compared to non-RV and non-AD populations, respectively. Multivariate analyses revealed an adjusted odds ratio (OR) of RV individuals undergoing THA of 0.22 (P < 0.001) compared to non-RV individuals, with a lower probability for RVs. Similarly, RV individuals had a statistically lower probability of undergoing TKA compared to non-RV individuals (OR 0.72, P < 0.001). The probability of AD individuals undergoing THA (OR 0.46, P < 0.001) and TKA (OR 0.73, P < 0.0001) after adjusting for confounders was lower compared to non-AD populations.
Conclusions:
Disparities in THA and TKA utilization rates were pervasive among racialized populations across Canada. We advocate that future studies on access to investigate causality or potential factors driving the observed disparity, such as language barriers and sociocultural perceptions regarding surgery.
Level Of Evidence:
III.
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