Table 3 Intra-rater reliability for measurement of joint mobility measured in degrees in three hypermobility instruments
Joint | Hypermobility instrument | Rating 1 mean (SD) | Rating 2 mean (SD) | Difference 1–2 | P-value | Intra class correlation [1, 2] (95%Cl) | Standard error of measurement |
|---|---|---|---|---|---|---|---|
5th Finger, left | BeS, CS, HdM | 71.5 (12.8) | 71.6 (13.2) | −0.1 | 0.908 | 0.88 (0.77–0.94) | 4.5 |
5th Finger, right | BeS, CS, HdM | 71.6 (13.1) | 70.4 (12.9) | 1.2 | 0.312 | 0.88 (0.75–0.94) | 4.6 |
Thumb, left | BeS, CS, HdM | 26.3 (8.7) | 27.3 (8.9) | −1.0 | 0.207 | 0.89 (0.78–0.94) | 3.0 |
Thumb, right | BeS, CS, HdM | 28.6 (9.4) | 28.6 (8.3) | 0.0 | 1.000 | 0.90 (0.79–0.95) | 2.8 |
Elbow, left | BeS, CS, HdM | 4.8 (4.0) | 5.2 (3.5) | −0.4 | 0.551 | 0.60 (0.30–0.79) | 2.4 |
Elbow, right | BeS, CS, HdM | 5.4 (4.1) | 4.2 (4.2) | 1.2 | 0.040 | 0.71 (0.47–0.86) | 2.1 |
Shoulder, left | HdM | 60.4 (15.5) | 62.5 (15.6) | −2.1 | 0.175 | 0.86 (0.73–0.93) | 5.7 |
Shoulder, right | HdM | 61.5 (13.9) | 63.0 (15.7) | −1.5 | 0.288 | 0.87 (0.74–0.94) | 5.3 |
Calcaneus, left | CS | 2.4 (1.5) | 1.9 (1.5) | 0.5 | 0.105 | 0.44 (0.11–0.69) | 1.1 |
Calcaneus, right | CS | 2.6 (1.3) | 2.4 (1.5) | 0.2 | 0.432 | 0.51 (0.19–0.74) | 1.0 |
Ankle, left | HdM | 40.2 (5.1) | 40.0 (6.2) | 0.3 | 0.676 | 0.81 (0.64–0.91) | 2.5 |
Ankle, right | HdM | 39.6 (6.8) | 39.6 (6.0) | 0.0 | 0.959 | 0.85 (0.70–0.93) | 2.5 |
Big toe, left | HdM | 99.9 (13.4) | 93.5 (14.6) | 6.3 | < 0.001 | 0.79 (0.31–0.92) | 5.2 |
Big toe, right | HdM | 93.1 (14.8) | 90.4 (16.5) | 2.7 | 0.079 | 0.86 (0.72–0.93) | 5.6 |
Knee extension, left | BeS, CS | 4.4 (3.5) | 3.9 (3.6) | 0.5 | 0.285 | 0.77 (0.58–0.89) | 1.7 |
Knee extension, right | BeS, CS | 4.8 (3.4) | 4.4 (4.1) | 0.4 | 0.515 | 0.66 (0.40–0.83) | 2.2 |
Hip abduction, left | HdM | 30.9 (5.0) | 33.4 (5.0) | −2.5 | 0.010 | 0.45 (0.11–0.70) | 3.6 |
Hip abduction, right | HdM | 28.8 (5.9) | 30.5 (6.2) | −1.7 | 0.062 | 0.67 (0.40–0.83) | 3.4 |