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Table 3 Univariate association of diagnosis with ADL limitation and pain at two and five years after primary THA

From: Patients with osteoarthritis and avascular necrosis have better functional outcomes and those with avascular necrosis worse pain outcomes compared to rheumatoid arthritis after primary hip arthroplasty: a cohort study

  Diagnosis
  RA/ inflammatory arthritis OA AVN Other
Overall moderate-severe ADL limitation     
Two-year follow-up 67/140 (47.9%) 1384/4714 (29.4%) 115/389 (29.6%) 83/192 (43.2%)
P-value compared to RA group   <0.01 <0.01 0.43
Five-year follow-up 45/97 (46.4%) 911/2648 (34.4%) 77/246 (31.3%) 62/139 (44.6%)
P-value compared to RA group   0.01 0.02 0.79
Moderate-severe hip pain     
Two-year follow-up 7/142 (4.9%) 355/4676 (7.6%) 47/378 (12.4%) 26/194 (13.4%)
P-value compared to RA group   0.02 0.24 0.01
Five-year follow-up 7/93 (7.5%) 270/2651 (10.2%) 37/244 (15.2%) 25/142 (17.6%)
P-value compared to RA group   0.07 0.41 0.03
  1. Reference category is rheumatoid arthritis/inflammatory arthritis and P-values were obtained from univariate logistic regression models. Numbers in bold represents significant p-value <0.05. ADL, activities of daily living; AVN, avascular necrosis of bone; OA, osteoarthritis; RA, rheumatoid arthritis; THA, total hip arthroplasty.