Table 2 Inter-rater reliability for measurement of joint mobility measured in degrees in three hypermobility instruments
Joint | Hypermobility instrument | Rater A mean (SD) | Rater B mean (SD) | Difference A-B | P-value | Intra class correlation [1, 2] (95%Cl) | Standard error of measurement |
|---|---|---|---|---|---|---|---|
5th Finger, left | BeS, CS, HdM | 76.9 (13.0) | 73.4 (13.8) | 3.5 | < 0.001 | 0.85 (0.69–0.92) | 4.7 |
5th Finger, right | BeS, CS, HdM | 72.9 (14.6) | 70.2 (14.0) | 2.7 | 0.014 | 0.85 (0.74–0.92) | 5.2 |
Thumb, left | BeS, CS, HdM | 24.8 (11.0) | 26.4 (10.9) | −1.6 | 0.017 | 0.91 (0.83–0.95) | 3.2 |
Thumb, right | BeS, CS, HdM | 27.4 (11.1) | 27.3 (9.3) | 0.1 | 0.859 | 0.89 (0.82–0.94) | 3.4 |
Elbow, left | BeS, CS, HdM | 5.6 (3.3) | 4.4 (3.4) | 1.2 | 0.002 | 0.69 (0.46–0.82) | 1.8 |
Elbow, right | BeS, CS, HdM | 5.4 (3.8) | 4.2 (3.9) | 1.2 | 0.005 | 0.67 (0.46–0.81) | 2.1 |
Shoulder, left | HdM | 62.1 (15.5) | 60.3 (16.6) | 1.8 | 0.081 | 0.90 (0.82–0.94) | 5.0 |
Shoulder, right | HdM | 63.4 (15.0) | 61.4 (15.9) | 2.0 | 0.054 | 0.89 (0.81–0.94) | 5.1 |
Calcaneus, left | CS | 3.2 (2.2) | 2.3 (1.8) | 0.8 | < 0.001 | 0.68 (0.41–0.83) | 1.0 |
Calcaneus, right | CS | 2.9 (1.8) | 2.3 (1.5) | 0.6 | 0.011 | 0.59 (0.36–0.75) | 1.0 |
Ankle, left | HdM | 38.1 (5.5) | 39.9 (6.2) | −1.8 | 0.001 | 0.77 (0.57–0.88) | 2.6 |
Ankle, right | HdM | 36.8 (6.2) | 39.2 (6.2) | −2.4 | < 0.001 | 0.82 (0.45–0.92) | 2.2 |
Big toe, left | HdM | 91.5 (10.9) | 97.4 (14.3) | −5.9 | < 0.001 | 0.73 (0.34–0.88) | 5.5 |
Big toe, right | HdM | 90.5 (12.2) | 94.4(15.3) | −3.9 | 0.003 | 0.77 (0.59–0.87) | 6.2 |
Knee extension, left | BeS, CS | 3.4 (3.4) | 4.0 (3.6) | −0.7 | 0.023 | 0.81 (0.68–0.89) | 1.5 |
Knee extension, right | BeS, CS | 3.5 (3.1) | 4.3 (3.7) | −0.8 | 0.019 | 0.76 (0.60–0.86) | 1.6 |
Hip abduction, left | HdM | 35.8 (5.0) | 32.4 (6.1) | 3.4 | < 0.001 | 0.44 (0.13–0.66) | 3.8 |
Hip abduction, right | HdM | 34.6 (6.6) | 30.2 (5.8) | 4.3 | < 0.001 | 0.54 (0.08–0.77) | 3.6 |