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.