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Table 5 Univariate association of diagnosis with each ADL limitation 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

  

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

  1. 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.