Table 5: Inter-rater reliability of the CDI and the MMS for LBP and no LBP groups.

  Test 1 Test 2
No LBP* LBP* Combined No LBP* LBP* Combined
CDI
Flexion 0.52 0.51 0.52 0.29 0.50 0.47
Extension 0.58 0.41 0.48 0.58 0.40 0.45
MMS
Flexion 0.70 0.83 0.75
Extension 0.84 0.85 0.82

* LBP = Low back pain.