Relationship of DTI metrics to general clinical assessmentsa
| DTI Measure | Correlation | Global Outcome Measures | GCS | Postconcussion Symptoms |
|---|---|---|---|---|
| FA | Positive correlation | 11 | 5 | 3 |
| Negative correlation | 4 | 1 | 3 | |
| No correlation | 3 | 8 | 6 | |
| MD | Positive correlation | 1 | 1 | 1 |
| Negative correlation | 5 | 4 | 2 | |
| No correlation | 0 | 0 | 1 |
↵a Total number of articles assessing relationships between DTI measures and global outcome measures (see “Functional Outcomes after TBI”), GCS, or postconcussive symptoms. Articles are classified as reporting positive correlation, negative correlation, or no correlation. Positive correlation indicates a correlation coefficient greater than zero. Negative correlation indicates a correlation coefficient less than zero. No correlation includes articles that reported analyzing relationships between the DTI measure and cognitive outcomes within a domain but either reported finding no correlation (correlation coefficient equal to zero) or a correlation with a P value >.05. A fully referenced version of this Table is available in On-line Table 9.