Table 4 Agreement analysis of the annual change in knee cartilage volume measured with different samples of 1.5 mm thick MRI slices*
Whole sample (n = 50) | ROA present (n = 9) | ROA absent (n = 41) | ||||
|---|---|---|---|---|---|---|
Difference (SD) | ICC† | Difference (SD) | ICC† | Difference (SD) | ICC† | |
Lateral tibial cartilage | ||||||
The whole sample | Reference | Reference | Reference | Reference | Reference | Reference |
1/2 whole sample‡ | 0.06(0.9) | 0.99 | 0.23(1.1) | 0.99 | 0.02(0.9) | 0.98 |
1/3 whole sample‡ | 0.05(1.5) | 0.96 | -0.65(1.4) | 0.98 | 0.20(1.5) | 0.95 |
1/4 whole sample‡ | -0.03(2.2) | 0.92 | -0.04(2.4) | 0.95 | -0.02(2.2) | 0.91 |
Medial tibial cartilage | ||||||
The whole sample | Reference | Reference | Reference | Reference | Reference | Reference |
1/2 whole sample‡ | -0.05(1.1) | 0.98 | -0.29(1.0) | 0.99 | 0.00(1.1) | 0.98 |
1/3 whole sample‡ | -0.03(1.8) | 0.95 | 0.24(1.8) | 0.97 | -0.10(1.8) | 0.95 |
1/4 whole sample‡ | 0.02(3.0) | 0.85 | -1.04(2.7) | 0.92 | 0.25(3.1) | 0.83 |
Patellar cartilage | ||||||
The whole sample | Reference | Reference | Reference | Reference | Reference | Reference |
1/2 whole sample‡ | 0.10(0.8) | 0.99 | -0.07(0.7) | 1.00 | 0.13(0.8) | 0.99 |
1/3 whole sample‡ | 0.10(1.5) | 0.96 | -0.18(1.4) | 0.98 | 0.16(1.5) | 0.95 |
1/4 whole sample‡ | 0.14(1.8) | 0.93 | 0.61(1.5) | 0.97 | 0.03(1.9) | 0.92 |