(A) Sensitivity of tendon and plantar strike methods including κ coefficient of interobserver agreement. (B) Intraobserver agreement between two tests of each method shown as the percentage (95% CI) of times that identical results were obtained. The κ coefficient (standard error) shows response agreement for the two test sessions for each method
| A | % Correct reduced/absent (95% CI) | % Correct normal (95% CI) | % Correct brisk (95% CI) | κ (SE) | |
|---|---|---|---|---|---|
| Students | Tendon strike | 81.1 (64.8 to 92.0) | 57.7 (45.4 to 69.4) | 37.0 (19.4 to 57.6) | 0.36 (0.06) |
| Plantar strike | 89.2 (74.6 to 97.0) | 54.9 (42.7 to 66.8) | 70.4 (49.8 to 86.2) | 0.50 (0.06) | |
| Clinicians | Tendon strike | 92.3 (64.0 to 99.8) | 63.2 (38.4 to 83.7) | 61.5 (31.6 to 86.1) | 0.56 (0.10) |
| Plantar strike | 92.3 (64.0 to 99.8) | 63.2 (38.4 to 83.7) | 61.5 (31.6 to 86.1) | 0.57 (0.10) |
| B | Subjects reduced/absent | Subjects normal | Subjects brisk | κ (SE) | |
|---|---|---|---|---|---|
| Students | Tendon 1st and 2nd | 86.5 (71.2 to 95.5) | 67.6 (55.4 to 78.2) | 66.7 (46.0 to 83.5) | 0.53 (0.07) |
| Plantar 1st and 2nd | 81.1 (64.8 to 92.0) | 64.8 (52.5 to 75.8) | 59.3 (38.8 to 77.6) | 0.51 (0.06) | |
| Clinicians | Tendon 1st and 2nd | 92.3 (64.0 to 99.8) | 68.4 (43.4 to 87.4) | 61.5 (31.6 to 86.1) | 0.59 (0.10) |
| Plantar 1st and 2nd | 92.3 (64.0 to 99.8) | 57.9 (33.5 to 79.7) | 92.3 (64.0 to 99.8) | 0.66 (0.09) |