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The p-values by t-test analysis of FA values
| Test values | Reference and positive FA values of cauda equina | Reference and positive FA values of left nerve root | Reference and positive FA values of right nerve root |
|---|---|---|---|
| p-values | 0.000 | 0.000 | 0.000a |
FA fractional anisotropy; aBecause equal variances were not assumed, Satterthwaite separate variance estimation t-test was selected
