Table 2.
Results of linear regression and Bland-Altman analyses for non-FS, FS, and corrected FS data sets.
| Linear regression | Bland Altman | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Fit model | (i) | (ii) | (iii) | (i) | (ii) | (iii) | ||||
|
| ||||||||||
| slope ± error |
y-int. ± error [1/s] |
slope ± error |
y-int. ± error [1/s] |
slope ± error |
y-int. ± error [1/s] |
+1.96×S D mean -1.96×SD [1/s] |
+1.96×S D mean -1.96×SD [1/s] |
+1.96×S D mean -1.96×SD [1/s] |
||
| 1.5 T | non-FS vs. FS | 0.876§ ± 0.009 | 21§ ± 6 | 0.783§ ± 0.011 | 36§ ± 6 | 0.829§ ± 0.008 | 21§ ± 5 | 94-45-184 | 104-56-216 | 90-60-211 |
| non-FS vs. corr. FS | 1.032§ ± 0.010 | 4 ± 7 | 0.927§ ± 0.013 | 19§ ± 7 | 0.981§ ± 0.010 | 1 ± 6 | 110 21-68 | 75-12-99 | 60-7-75 | |
|
| ||||||||||
| 3 T | non-FS vs. FS | 1.027 ± 0.018 | -19 ± 18 | 0.980 ± 0.020 | -4 ± 15 | 1.028 ± 0.017 | -17 ± 15 | 129 3-123 | 75-17-109 | 108 3-101 |
Note: Slope and y-intercept of each linear regression were tested by the two-sided t-test for being statistically different from 1 and 0, respectively, at a significance level of P = 0.05. Values for which statistical significance was found are indicated by the § symbol. Abbreviations: y-int., y-intercept; SD, standard deviation; non-FS, without fat saturation; FS, with fat saturation; corr. FS, corrected fat saturation.