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Table 4 Multivariable-adjusted 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

  OA AVN Other
  ORa(95% CI) P-value ORa(95% CI) P-value ORa(95% CI) P-value
Moderate-severe overall ADL limitationb       
 Two-years 0.5 (0.3,0.8) 0.01 0.4 (0.2 to 0.8) 0.01 1.0 (0.5 to 1.9) 0.91
 Five-years 0.7 (0.4 to 1.4) 0.36 0.9 (0.4 to 1.8) 0.78 2.1 (0.9 to 4.8) 0.07
Moderate-severe hip painc       
 Two-years 1.6 (0.6 to 4.5) 0.40 2.8 (0.9 to 8.5) 0.06 2.2 (0.6 to 7.3) 0.22
 Five-years 2.1 (0.7 to 6.5) 0.22 4.1 (1.2 to 14.1) 0.02 4.2 (1.1 to 16.0) 0.04
  1. aReference category is rheumatoid arthritis/inflammatory arthritis; badjusted for 16 additional covariates/confounders: age, gender, BMI, Deyo-Charlson comorbidity score, ASA class, distance from the medical center, cement fixation, preoperative limitation in seven activities, anxiety and depression; cadjusted for 10 additional covariates/confounders: age, gender, BMI, Deyo-Charlson comorbidity score, ASA class, distance from the medical center, cement fixation, preoperative pain, anxiety and depression. Numbers in bold represents significant p-value <0.05. ADL, activities of daily living; ASA, American Society of Anesthesiologists; AVN, avascular necrosis of bone; BMI, body mass index; CI, confidence interval; OA, osteoarthritis; OR, odds ratio; RA, rheumatoid arthritis; THA, total hip arthroplasty.