Table 3.
Non-parametric rank-based association between the region-based and location-independent of the quantitatively-measured cartilage thickness change and the percentage of weight change from baseline to follow-up visits.
| Approach | Sub-Region/Extended Ordered Value | Kendall's Tau Coefficient | 95% Bootstrap CI |
|---|---|---|---|
| Region-Based | |||
| Δ ccMF | -0.041 | (-0.214, 0.136) | |
| Δ ecMF | -0.088 | (-0.255, 0.085) | |
| Δ icMF | -0.070 | (-0.228, 0.087) | |
| Δ cMT | 0.147 | (-0.009, 0.293) | |
| Δ eMT | 0.009 | (-0.180, 0.191) | |
| Δ iMT | 0.062 | (-0.090, 0.206) | |
| Δ aMT | 0.204 | (0.057, 0.354) * | |
| Δ pMT | 0.011 | (-0.158, 0.165) | |
| Δ ccLF | 0.134 | (-0.062, 0.317) | |
| Δ ecLF | 0.142 | (-0.031, 0.314) | |
| Δ icLF | 0.049 | (-0.140, 0.239) | |
| Δ cLT | 0.140 | (-0.066, 0.324) | |
| Δ eLT | 0.165 | (-0.009, 0.337) | |
| Δ iLT | 0.083 | (-0.091, 0.250) | |
| Δ aLT | 0.200 | (0.035, 0.362) * | |
| Δ pLT | -0.017 | (-0.173, 0.163) | |
| Location-Independent | |||
| eOV 1 | -0.022 | (-0.206, 0.150) | |
| eOV 2 | 0.043 | (-0.130, 0.229) | |
| eOV 3 | 0.082 | (-0.098, 0.260) | |
| eOV 4 | 0.129 | (-0.048, 0.298) | |
| eOV 5 | 0.125 | (-0.066, 0.286) | |
| eOV 6 | 0.155 | (-0.012, 0.338) | |
| eOV 7 | 0.138 | (-0.029, 0.301) | |
| eOV 8 | 0.134 | (-0.030, 0.289) | |
| eOV 9 | 0.120 | (-0.039, 0.271) | |
| eOV 10 | 0.124 | (-0.022, 0.269) | |
| eOV 11 | 0.108 | (-0.060, 0.246) | |
| eOV 12 | 0.127 | (-0.047, 0.296) | |
| eOV 13 | 0.136 | (-0.029, 0.308) | |
| eOV 14 | 0.132 | (-0.046, 0.318) | |
| eOV 15 | 0.120 | (-0.062, 0.296) | |
| eOV 16 | 0.066 | (-0.135, 0.244) | |
| Summary Scores | |||
| Thinning Score | 0.090 | (-0.075, 0.262) | |
| Thickening Score | 0.165 | (0.008, 0.340) * | |
| Total Change Score | -0.047 | (-0.211, 0.121) |
Confidence intervals that excluded the null value of 0 suggested statistical significance.
CI – confidence interval, eOV - extended (i.e. medial and lateral) ordered value, Δ xcMF -change in quantitatively-measured cartilage thickness in central, external, or internal sub-regions of medial femoral cartilage plate, Δ xMT - change in quantitatively-measured cartilage thickness in central, external, internal, anterior, or posterior sub-regions of medial tibial cartilage plate, Δ xcLF - change in quantitatively-measured cartilage thickness in central, external, or internal sub-regions of lateral femoral cartilage plate, Δ xLT - change in quantitatively-measured cartilage thickness in central, external, internal, anterior, or posterior sub-regions of lateral tibial cartilage plate.