Chondrocalcinosis and physical disability
| Chondrocalcinosis (%) | No chondrocalcinosis (%) | ||||
|---|---|---|---|---|---|
| Item | N=169 | N=1460 | p value | RFS and age-adjusted OR | 95% CI |
| Self-reported disability | |||||
| Personal care | |||||
| Rising from bed/chair | 27.2 | 13.6 | <0.0001 | 1.21 | 0.71 to 2.06 |
| Bathing | 36.1 | 21.3 | <0.0001 | 1.10 | 0.67 to 1.80 |
| Dressing | 25.4 | 15.3 | 0.0007 | 1.14 | 0.68 to 1.93 |
| Toilet using | 17.2 | 6.4 | <0.0001 | 1.84 | 1.00 to 3.50 |
| Indoor mobility | |||||
| Transferring | 19.5 | 10.5 | 0.0004 | 1.22 | 0.68 to 2.21 |
| Need of | |||||
| Cane | 19.5 | 10.6 | 0.0006 | 1.90 | 1.11 to 3.24 |
| Wheel chair | 0.6 | 1.2 | NA | NA | NA |
| Sustain (any type) | 16.6 | 9.9 | 0.007 | 0.97 | 0.53 to 1.78 |
| Furniture for support | 24.3 | 13.1 | 0.0001 | 1.34 | 0.47 to 2.25 |
| Outdoor mobility and housekeeping (never engaged in) | |||||
| Walking >1/2 mile | 55.6 | 39.6 | <0.0001 | 2.09 | 1.08 to 4.03 |
| Bicycle >1 km | 59.2 | 45.6 | 0.0008 | 1.03 | 0.66 to 1.60 |
| Gardening | 55.6 | 42.2 | 0.0008 | 1.00 | 0.64 to 1.57 |
| Total sedentaries* | 34.9 | 18.5 | <0.0001 | 1.43 | 0.87 to 2.35 |
| Lifting 5 kg | 42.6 | 29.3 | 0.0004 | 1.26 | 0.82 to 1.94 |
| Going shopping | 61.0 | 40.8 | <0.0001 | 1.77 | 1.13 to 2.76 |
| Heavy household chores | 65.7 | 52.1 | 0.0008 | 1.16 | 0.76 to 1.80 |
| Performance | |||||
| Lower extremity function | |||||
| Side-by-side test no | 14.4 | 8.5 | 0.01 | 1.46 | 0.82 to 2.57 |
| Semitandem test no | 17.7 | 9.4 | 0.02 | 1.42 | 0.76 to 2.69 |
| Tandem test no | 40.3 | 30.3 | 0.02 | 0.96 | 0.56 to 1.62 |
| Walking speed <0.57 m/s† | 33.8 | 22.9 | <0.0001 | 1.39 | 0.93 to 2.08 |
| Rising from a chair five times no | 11.7 | 4.7 | 0.0005 | 2.18 | 1.09 to 4.38 |
| Climbing stairs (difficulty) | 45.0 | 31.1 | <0.0001 | 1.13 | 0.72 to 1.77 |
| Summary performance score >9‡ | 22.4 | 42.9 | <0.0001 | 0.67 | 0.39 to 1.16 |
↵* Sedentary refers to the summary score for physical activity and indicates subjects who never undertake any of the three activities listed above (walking, bicycling and gardening).
↵† 0.57 m/s corresponds to the lowest quartile speed.
↵‡ Summary performance score for lower extremity function was created by adding the scores for the tests of standing balance, walking and repeatedly rising from a chair. Patients were assigned five performance scores (from 0 to 4) for each test, with a score of 0 representing the inability to complete the test and 4 the highest level of performance.
NA, statistical analysis not applicable due to limited number of subjects presenting with this feature; RFS, radiographic features score.
Bold type indicates p>0.05