Table 2.
Results of the two-way interaction model: coefficients of fixed effects and covariance parameters
| Parameter | Coefficient (95% CI) | Significance |
|---|---|---|
| Intercept | 1.56 (1.19, 1.93) | t = 8.38, P < 0.001 |
| MTP 1 | −0.93 (−1.39, −0.46) | t = −3.95, P < 0.001 |
| MTP 2 | −0.89 (−1.35, −0.42) | t = −3.78, P < 0.001 |
| MTP 3 | −0.65 (−1.12, −0.19) | t = −2.79, P = 0.006 |
| MTP 4 | −0.59 (−1.06, −0.13) | t = −2.53, P = 0.012 |
| Distal | −1.10 (−1.33, −0.88) | t = −9.80, P < 0.001 |
| Dorsal | −0.27 (−0.49, −0.05) | t = −2.41, P = 0.016 |
| Medial | 0.06 (−0.03, 0.16) | t = 1.29, P = 0.199 |
| MTP 1a distal | 0.85 (0.54, 1.17) | t = 5.36, P < 0.001 |
| MTP 2a distal | 0.75 (0.44, 1.06) | t = 4.71, P < 0.001 |
| MTP 3a distal | 0.78 (0.46, 1.10) | t = 4.85, P < 0.001 |
| MTP 4a distal | 0.60 (0.29, 0.92) | t = 3.79, P < 0.001 |
| MTP 1a dorsal | 0.02 (−0.29, 0.33) | t = 0.13, P = 0.896 |
| MTP 2a dorsal | −0.02 (−0.33, 0.29) | t = −0.13, P = 0.896 |
| MTP 3a dorsal | −0.36 (−0.67, −0.04) | t = −2.23, P = 0.026 |
| MTP 4a dorsal | −0.19 (−0.50, 0.13) | t = −1.18, P = 0.239 |
| Residual | 0.61 (0.55, 0.67) | Z = 20.45, P < 0.001 |
| Within-patient variance | 0.16 (0.06, 0.41) | Z = 2.07, P = 0.038 |
| Within-joint variance | 0.43 (0.31, 0.60) | Z = 5.88, P < 0.001 |
aInteraction. Z: Wald test.