Appropriateness of Invasive Cardiovascular Interventions in German Hospitals (2000 - 2001): An Evaluation Using the RAND Appropriateness Criteria

Clinical appropriateness and not race predicted referral for joint arthroplasty

OBJECTIVE

To understand the reasons behind racial disparities in the use of total joint arthroplasty (TJA), we sought to examine the predictors of time to referral to orthopedic surgery for consideration of joint replacement.

METHODS

In this prospective, longitudinal study of 676 primary care clinic patients with at least a moderately severe degree of hip or knee osteoarthritis (OA), we examined the effects of race, health beliefs (i.e., perceived benefits and risks) of TJA, and clinical appropriateness of TJA on referral to orthopedic surgery.

RESULTS

The sample included 255 African Americans (38%) and 421 whites (62%); 523 patients had knee OA (78%) and 153 had hip OA (22%). Subjects were 60% male, with a mean +/- SD age of 64 +/- 9 years, a mean +/- SD body mass index of 33.6 +/- 8 kg/m(2), and a mean +/- SD summary Western Ontario and McMaster Universities Osteoarthritis Index score of 56 +/- 14, suggesting moderately severe OA. At baseline, African Americans perceived fewer benefits and greater risk from TJA than whites. There were no significant racial group differences in the proportions of cases deemed clinically appropriate for TJA. After controlling for potential confounders, clinical appropriateness (hazard ratio [HR] 1.95, 95% confidence interval [95% CI] 1.15-3.32; P = 0.01) predicted referral to orthopedic surgery. Neither race (HR 1.30, 95% CI 0.94-2.05; P = 0.1) nor health beliefs (HR 1.0, P = 0.5) were associated with referral status.

CONCLUSION

In this sample of primary care clinic patients, African Americans and whites were equally likely to be referred by their physicians to orthopedic surgery. Clinical appropriateness predicted future referral to orthopedic surgery, and not race or TJA-specific health beliefs.

African Americans and Whites Are Equally Appropriate to be Considered for Total Joint Arthroplasty

Objective.

Ethnic disparities in the use of total joint arthroplasty (TJA) may be attributed to differences in the clinical appropriateness to undergo TJA. We sought to determine if racial differences in clinical appropriateness for surgery existed among a sample of primary care clinic patients with moderately to severely symptomatic knee or hip osteoarthritis (OA).

Methods.

We used the cross-sectional data of 684 patients who are potential candidates for TJA. Using a validated TJA appropriateness algorithm, an appropriateness factor was derived using the following variables: age (50–70 or > 70 yrs), Charlson comorbidity (≤ 1 or > 1), Western Ontario and McMaster Universities OA Index (WOMAC) pain and physical function, and adequacy of previous medical management. We used logistic regression to estimate the association of race with the dichotomous outcome of clinical appropriateness for TJA consideration.

Results.

Sample consisted of 425 (62%) whites and 260 (38%) African Americans; 532 (78%) had knee OA and 153 (22%) had hip OA. The mean age was 64 ± 9 years and the mean body mass index was 33.6 ± 8 kg/m2. The mean overall WOMAC score was 56 ± 14 (range 30–96), suggesting moderately severe OA. There were no significant racial group differences (p = 0.3) in the proportions of those deemed clinically appropriate for TJA. After controlling for potential confounders, race was not a predictor of clinical appropriateness for TJA (odds ratio 1.2, 95% confidence interval 0.8–1.8, p = 0.3).

Conclusion.

African Americans and whites were equally appropriate to be considered for TJA.