Table 6

Multivariable-adjusted association of diagnosis with each ADL limitation at two and five years after primary THA
Two years Five years
ORa 95% CI P-value ORa 95% CI P-value
Limitations in walkingb
 Osteoarthritis 0.7 (0.4,1.2) 0.21 0.8 (0.4,1.5) 0.43
 AVN 0.8 (0.4,1.7) 0.63 0.8 (0.4,1.8) 0.62
 Other 1.3 (0.6,2.7) 0.55 1.2 (0.5,3.1) 0.67
Limitations in climbing stairsb
 Osteoarthritis 0.6 (0.3,1.0) 0.07 0.5 (0.3,0.9) 0.03
 AVN 0.5 (0.3,1.1) 0.07 0.5 (0.2,1.0) 0.049
 Other 1.0 (0.5,2.1) 0.95 0.9 (0.4,2.2) 0.80
Limitations in putting on socks/shoesb
 Osteoarthritis 0.7 (0.4,1.1) 0.12 0.7 (0.4,1.3) 0.27
 AVN 0.5 (0.3,0.9) 0.03 0.9 (0.4,1.8) 0.72
 Other 1.6 (0.8,3.2) 0.16 2.0 (1.0,4.4) 0.07
Limitations in picking up objectsb
 Osteoarthritis 0.7 (0.4,1.1) 0.10 0.6 (0.3,1.1) 0.09
 AVN 0.6 (0.3,1.1) 0.08 0.8 (0.4,1.6) 0.50
 Other 1.1 (0.6,2.3) 0.73 1.5 (0.7,3.3) 0.30
Limitations in getting in/out of carb
 Osteoarthritis 1.0 (0.5,2.0) 0.98 0.8 (0.4,1.6) 0.53
 AVN 0.9 (0.4,2.0) 0.78 0.9 (0.4,2.1) 0.84
 Other 1.1 (0.4,2.9) 0.80 1.5 (0.6,3.7) 0.36
Limitations in rising from chairb
 Osteoarthritis 0.4 (0.2,0.9) 0.03 1.0 (0.4,2.5) 0.99
 AVN 0.4 (0.2,0.9) 0.04 1.3 (0.4,3.8) 0.66
 Other 0.7 (0.3,2.2) 0.59 1.4 (0.4,4.9) 0.56
Limitations in sittingb
 Osteoarthritis N/A N/A
 AVN
 Other

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; N/A, not applicable, since the model did not run for sitting, due to too few cases. ADL, activities of daily living; ASA, American Society of Anesthesiologists; AVN, avascular necrosis of bone; BMI, body mass index; CI, confidence interval; OR, odds ratio; RA, rheumatoid arthritis; THA, total hip arthroplasty.

Singh and Lewallen

Singh and Lewallen BMC Medicine 2013 11:210   doi:10.1186/1741-7015-11-210

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