Table 5

Univariate association of diagnosis with each ADL limitation at two and five years after primary THA
Two years Five years
n/N (%) ORa 95% CI P-value n/N (%) ORa 95% CI P-value
Limitations in walking
 RAa 50/141 (35.5%) 1.0 (ref) 38/97 (39.2%) 1.0 (ref)
 Osteoarthritis 1298/4815 (27%) 0.7 (0.5 to 1.0) 0.04 927/2723 (34%) 0.8 (0.5 to 1.2) 0.32
 AVN 113/397 (28.5%) 0.7 (0.5 to 1.1) 0.15 74/250 (29.6%) 0.7 (0.4 to 1.1) 0.10
 Other 70/201 (34.8%) 1.0 (0.6 to 1.6) 0.91 51/145 (35.2%) 0.8 (0.5 to 1.5) 0.55
Limitations in climbing stairs
 RA 53/144 (36.8%) 1.0 (ref) 38/98 (38.8%) 1.0 (ref)
 Osteoarthritis 818/4873 (16.8%) 0.3 (0.2 to 0.5) <0.01 562/2739 (20.5%) 0.4 (0.3 to 0.6) <0.01
 AVN 77/397 (19.4%) 0.4 (0.3 to 0.6) <0.01 48/250 (19.2%) 0.4 (0.2 to 0.6) <0.01
 Other 55/202 (27.2%) 0.6 (0.4 to 1.0) 0.07 43/145 (29.7%) 0.7 (0.4 to 1.2) 0.15
Limitations in putting on socks/shoes
 RA 57/143 (39.9%) 1.0 (ref) 37/97 (38.1%) 1.0 (ref)
 Osteoarthritis 1178/4867 (24.2%) 0.5 (0.3 to 0.7) <0.01 725/2733 (26.5%) 0.6 (0.4 to 0.9) 0.02
 AVN 85/400 (21.3%) 0.4 (0.3 to 0.6) <0.01 68/253 (26.9%) 0.6 (0.4 to 1.0) 0.05
 Other 74/201 (36.8%) 0.9 (0.6 to 1.4) 0.59 54/144 (37.5%) 1.0 (0.6 to 1.7) 0.92
Limitations in picking up objects
 RA 55/145 (37.9%) 1.0 (ref) 40/98 (40.8%) 1.0 (ref)
 Osteoarthritis 1153/4873 (23.7%) 0.5 (0.4 to 0.7) <0.01 730/2735 (26.7%) 0.5 (0.3 to 0.8) <0.01
 AVN 92/399 (23.1%) 0.5 (0.3 to 0.7) <0.01 63/252 (25%) 0.5 (0.3 to 0.8) <0.01
 Other 68/203 (33.5%) 0.8 (0.5 to 1.3) 0.41 50/146 (34.2%) 0.8 (0.4 to 1.3) 0.32
Limitations in getting in/out of car
 RA 29/144 (20.1%) 1.0 (ref) 21/98 (21.4%) 1.0 (ref)
 Osteoarthritis 703/4864 (14.5%) 0.7 (0.4 to 1.0) 0.06 488/2745 (17.8%) 0.8 (0.5 to 1.3) 0.39
 AVN 63/401 (15.7%) 0.7 (0.4 to 1.2) 0.24 40/251 (15.9%) 0.7 (0.4 to 1.3) 0.26
 Other 48/202 (23.8%) 1.2 (0.7 to 2.1) 0.43 36/146 (24.7%) 1.2 (0.6 to 2.3) 0.58
Limitations in rising from chair
 RA 25/144 (17.4%) 1.0 (ref) 14/98 (14.3%) 1.0 (ref)
 Osteoarthritis 353/4852 (7.3%) 0.4 (0.2 to 0.6) <0.01 272/2727 (10%) 0.7 (0.4 to 1.2) 0.17
 AVN 39/401 (9.7%) 0.5 (0.3 to 0.9) 0.02 30/252 (11.9%) 0.8 (0.4 to 1.6) 0.55
 Other 24/201 (11.9%) 0.6 (0.4 to 1.2) 0.16 18/143 (12.6%) 0.9 (0.4 to 1.8) 0.70
Limitations in sitting
 RA 1/143 (0.7%) 1.0 (ref) 1/97 (1%) 1.0 (ref)
 Osteoarthritis 44/4850 (0.9%) 1.3 (0.2 to 9.5) 0.8 26/2724 (1%) 0.9 (0.1 to 6.9) 0.94
 AVN 9/396 (2.3%) 3.3 (0.4 to 26.3) 0.3 7/251 (2.8%) 2.8 (0.3 to 22.7) 0.35
 Other 2/200 (1.0%) 1.4 (0.1 to 16.0) 0.8 3/144 (2.1%) 2.0 (0.2 to 20.0) 0.54

aReference category is rheumatoid arthritis/inflammatory arthritis. --, not applicable, since these ADLs did not have a response for mild limitation category. Numbers in bold represents significant p-value <0.05, ADL, activities of daily living; AVN, avascular necrosis of bone; 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

Open Data