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. Author manuscript; available in PMC: 2019 Jun 1.
Published in final edited form as: Osteoarthritis Cartilage. 2018 Mar 20;26(6):775–782. doi: 10.1016/j.joca.2018.03.003

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.