Pair-wise likelihood ratio tests for the multivariate models
| Reader, Diagnostic Instrument | −2LL | χ2 | P | Δdf |
|---|---|---|---|---|
| sMRI | 260.18 | |||
| sMRI + MRA | 117.09 | |||
| sMRI + MRA + ASL | 84.23 | |||
| (sMRI) vs (sMRI + MRA) | 143.09 | <.001a | 4 | |
| (sMRI + MRA) vs (sMRI + MRA + ASL) | 32.86 | <.001a | 1 | |
| (sMRI) vs (sMRI + MRA + ASL) | 175.95 | <.001a | 8 |
Note:—LL indicates log likelihood.
↵a Significance (P < .001)—that is, that the null hypothesis (difference in −2LLs = 0) is rejected and that the −2LLs are different.