Introduction
Methods
Design
Study population
Measurements
Demographic and clinical data
Activity limitations and pain
Coexisting disorders
Statistical analyses
Results
Study population
Gender: male, n (%) | 83 (28.8%) |
Age, mean (sd) | 66 (8.7) |
Body mass index, mean (sd), kg/m2
| 27.8 (4.5) |
Location OA | |
Knee OA, n (%) | 139 (48.4%) |
Hip OA, n (%) | 72 (25.1%) |
Both, n (%) | 76 (26.5%) |
Duration of complains (years), mean (sd) | 9.9 (10.7) |
Physical functioning (WOMAC), mean (sd) | 56.51 (19.85) |
Pain (VAS), mean (sd) | 4.81 (2.56) |
Radiological impairment kneea
| |
K&L grade ≥2; n (%) | 118 (95.2) |
Radiological impairment hipb
| |
K&L grade ≥2; n (%) | 83 (97.6) |
Coexisting disorders
Present n (%) | |
---|---|
Musculoskeletal disorders | |
Chronic back pain (>3 month) or hernia
|
85 (29.5)
|
Arthritis of the hands or feet
|
53 (18.4)
|
Other chronic rheumatic diseases (>3 month)
|
29 (10.1)
|
Non-musculoskeletal disorders | |
Asthma or COPD
|
45 (15.6)
|
Sinusitis
|
35 (12.2)
|
Severe cardiac disorder or coronary disease
|
23 (8)
|
Hypertension
|
92 (31.9)
|
(Consequences of) a stroke | 6 (2.1) |
Peptic ulcer or duodenal ulcer disease | 10 (3.5) |
Severe bowel disorder (>3 month)
|
19 (6.6)
|
Gallstones or inflammation of the gall bladder | 6 (2.1) |
Liver disorder or cirrhosis of the liver | 0 (0) |
Kidney stones (calculus renalis) | 7 (2.4) |
Severe kidney disorder | 2 (0.7) |
Chronic cystitis
|
16 (5.6)
|
Prolapse (only females, N = 205)
|
17 (8.3)
|
Diabetes
|
28 (9.7)
|
Thyroid disorders
|
25 (8.7)
|
Epilepsy | 2 (0.7) |
Migraine
|
19 (6.6)
|
Severe skin disease | 4 (1.4) |
Cancer and malignant diseases | 7 (2.4) |
Sensory impairments | |
Hearing impairments in a group conversation (N = 286)
|
90 (31.5)
|
Hearing impairments in a face-to-face conversation (N = 287)
|
22 (7.7)
|
Vision impairments in short distances (N = 287)
|
77 (26.8)
|
Vision impairments in long distances (N = 287)
|
33 (11.5)
|
Dizziness in combination with falling
|
24 (8.3)
|
Overweight and obesity (N = 285) | |
Overweight (25 ≤ BMI < 30)
| 149 (51.7) |
Obesity (BMI ≥ 30)
| 68 (23.9) |
Association between coexisting disorders and activity limitations
Activity limitations (WOMAC) | Pain (VAS) | |
---|---|---|
Musculoskeletal disorders | ||
Chronic back pain (>3 month) or hernia | ||
Present (mean (SD))a
| 51.7 (18.2) | 5.0 (2.5) |
Absent (mean (SD))a
| 58.5 (20.2) | 4.7 (2.5) |
B (95% CI)b
| −6.4 (−11.5; −1.4)* | 0.3 (−0.4; 1.0) |
R
2
| 0.033 | 0.008 |
Arthritis of hands or feet | ||
Present (mean (SD))a
| 50.1 (20.3) | 5.8 (2.5) |
Absent (mean (SD))a
| 57.9 (19.5) | 4.6 (2.5) |
B (95% CI)b
| −7.4 (−13.4; −1.5)* | 1.2 (0.4; 1.9)** |
R
2
| 0.032 | 0.037 |
Other chronic rheumatic diseases (>3 month) | ||
Present (mean (SD))a
| 47.3 (18.3) | 5.9 (2.6) |
Absent (mean (SD))a
| 57.5 (19.8) | 4.7 (2.5) |
B (95% CI)b
| −10.0 (−17.6; −2.4)* | 1.1 (0.1; 2.1)* |
R
2
| 0.035 | 0.023 |
Non-musculoskeletal disorders | ||
Asthma or COPD | ||
Present (mean (SD))a
| 55.2 (19.1) | 4.8 (2.6) |
Absent (mean (SD))a
| 56.7 (20.0) | 4.8 (2.6) |
B (95% CI)b
| −1.7 (−8.0; 4.7) | 0.0 (−0.8; 0.9) |
R
2
| 0.012 | 0.005 |
Sinusitis | ||
Present (mean (SD))a
| 54.5 (15.8) | 4.9 (2.6) |
Absent (mean (SD))a
| 56.8 (20.4) | 4.8 (2.6) |
B (95% CI)b
| −2.0 (−9.1; 5.1) | 0.1 (−0.8; 1.0) |
R
2
| 0.012 | 0.006 |
Severe cardiac disorder or coronary disease | ||
Present (mean (SD))a
| 51.2 (20.6) | 5.1 (2.8) |
Absent (mean (SD))a
| 57.0 (19.8) | 4.8 (2.6) |
B (95% CI)b
| −5.5 (−14.1; 3.1) | 0.4 (−0.7; 1.6) |
R
2
| 0.012 | 0.008 |
Hypertension | ||
Present (mean (SD))a
| 55.8 (21.9) | 4.9 (2.5) |
Absent (mean (SD))a
| 56.8 (18.8) | 4.8 (2.6) |
B (95% CI)b
| −0.6 (−5.6; 4.5) | 0.3 (−0.4; 0.9) |
R
2
| 0.012 | 0.007 |
Severe bowel disorder (>3 month) | ||
Present (mean (SD))a
| 54.3 (20.3) | 4.5 (3.2) |
Absent (mean (SD))a
| 56.7 (19.9) | 4.8 (2.5) |
B (95% CI)b
| −2.0 (−11.3; 7.2) | −0.4 (−1.6; 0.8) |
R
2
| 0.012 | 0.007 |
Chronic cystitis | ||
Present (mean (SD))a
| 45.2 (17.6) | 5.4 (2.9) |
Absent (mean (SD))a
| 57.2 (19.8) | 4.8 (2.5) |
B (95% CI)b
| −10.8 (−20.9; −0.7)† | 0.7 (−0.6; 2.1) |
R
2
| 0.027 | 0.01 |
Prolapse (females only) | ||
Present (mean (SD))a
| 47.0 (22.0) | 5.2 (2.9) |
Absent (mean (SD))a
| 56.4 (19.7) | 4.8 (2.6) |
B (95% CI)b
| −9.0 (−18.9; 0.9)*** | 0.4 (−0.9; 1.7) |
R
2
| 0.03 | 0.005 |
Diabetes | ||
Present (mean (SD))a
| 49.5 (18.2) | 5.9 (2.2) |
Absent (mean (SD))a
| 57.3 (19.9) | 4.7 (2.6) |
B (95% CI)b
| −8.2 (−15.9; −0.4)* | 1.2 (0.2; 2.2)* |
R
2
| 0.026 | 0.024 |
Thyroid disorders | ||
Present (mean (SD))a
| 51.4 (22.6) | 5.6 (2.8) |
Absent (mean (SD))a
| 57.0 (19.6) | 4.7 (2.5) |
B (95% CI)b
| −5.8 (−14.2; 2.6) | 1.1 (0.0; 2.1)*** |
R
2
| 0.018 | 0.018 |
Migraine | ||
Present (mean (SD))a
| 56.6 (20.8) | 4.5 (2.6) |
Absent (mean (SD))a
| 56.5 (19.8) | 4.8 (2.6) |
B (95% CI)b
| 0.1 (−9.2; 9.5) | −0.4 (−1.6; 0.8) |
R
2
| 0.012 | 0.007 |
Sensory impairments | ||
Hearing impairments in a group conversation | ||
Present (mean (SD))a
| 55.4 (19.1) | 4.6 (2.7) |
Absent (mean (SD))a
| 57.0 (20.2) | 4.9 (2.5) |
B (95% CI)b
| −0.9 (−6.0; 4.2) | −0.3 (−0.9; 0.4) |
R
2
| 0.011 | 0.004 |
Hearing impairments in a face-to-face conversation | ||
Present (mean (SD))a
| 46.7 (19.9) | 5.6 (2.8) |
Absent (mean (SD))a
| 57.2 (19.7) | 4.8 (2.5) |
B (95% CI)b
| −9.6 (−18.4; −0.8)* | 1.0 (−0.1; 2.2)*** |
R
2
| 0.027 | 0.016 |
Vision impairments in short distances | ||
Present (mean (SD))a
| 54.1 (19.8) | 5.0 (2.6) |
Absent (mean (SD))a
| 57.3 (19.8) | 4.8 (2.6) |
B (95% CI)b
| −2.9 (−9.1; 2.3) | 0.3 (−0.4; 1.0) |
R
2
| 0.016 | 0.007 |
Vision impairments in long distances | ||
Present (mean (SD))a
| 47.6 (19.1) | 5.2 (2.5) |
Absent (mean (SD))a
| 57.6 (19.7) | 4.8 (2.6) |
B (95% CI)b
| −9.0 (−16.3; −1.6)* | 0.6 (−0.4; 1.6) |
R
2
| 0.031 | 0.01 |
Dizziness in combination with falling | ||
Present (mean (SD))a
| 45.4 (23.4) | 5.7 (2.9) |
Absent (mean (SD))a
| 57.5 (19.2) | 4.7 (2.5) |
B (95% CI)b
| −11.2 (−19.6; −2.8)** | 1.1 (0.0; 2.2)*** |
R
2
| 0.035 | 0.019 |
Weight | ||
Overweight (25 ≤ BMI < 30) | ||
Present (mean (SD))a
| 54.7 (19.1) | 4.9 (2.6) |
Absent (mean (SD))a
| 62.7 (19.0) | 4.4 (2.6) |
B (95% CI)b
| −8.0 (−13.7; −2.4)** | 0.5 (−0.3; 1.2) |
Obesity (BMI ≥ 30) | ||
Present (mean (SD))a
| 54.1 (21.4) | 5.0 (2.6) |
Absent (mean (SD))a
| 62.7 (19.0) | 4.4 (2.6) |
B (95% CI)b
| −8.6 (−15.3; −1.9)* | 0.6 (−0.3; 1.5) |
R
2
| 0.041 | 0.014 |