|  |  | Test |  |  |  |  |  | Retest |  |  |  |
---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Min | Max | Mean value | 95% Confidence interval | SD | Min | Max | Mean value | 95% Confidence interval | SD | ||
 |  |  |  | from | to |  |  |  |  | from | to |  |
NDI-PL | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Total score | 3 | 36 | 21.6 | 19.6 | 23.6 | 7.9 | 3 | 42 | 20.6 | 18.5 | 22.6 | 8.0 |
   Pain intensity | 0 | 5 | 2.1 | 1.8 | 2.3 | 1.0 | 0 | 5 | 2.0 | 1.7 | 2.2 | 1.0 |
   Personal care | 0 | 4 | 1.3 | 1.0 | 1.5 | 0.9 | 0 | 4 | 1.2 | 1.0 | 1.4 | 0.9 |
   Lifting | 0 | 5 | 2.6 | 2.2 | 3.0 | 1.6 | 0 | 5 | 2.6 | 2.2 | 2.9 | 1.4 |
   Reading | 0 | 4 | 2.4 | 2.2 | 2.7 | 1.0 | 0 | 5 | 2.4 | 2.1 | 2.7 | 1.2 |
   Headaches | 0 | 5 | 2.4 | 2.1 | 2.8 | 1.4 | 0 | 5 | 2.1 | 1.8 | 2.5 | 1.4 |
   Concentration | 0 | 4 | 1.5 | 1.2 | 1.7 | 1.0 | 0 | 5 | 1.4 | 1.1 | 1.7 | 1.0 |
   Work | 0 | 5 | 2.6 | 2.3 | 2.9 | 1.2 | 0 | 5 | 2.4 | 2.1 | 2.7 | 1.2 |
   Driving | 0 | 5 | 2.8 | 2.3 | 3.2 | 1.4 | 0 | 5 | 2.7 | 2.3 | 3.1 | 1.3 |
   Sleeping | 0 | 5 | 2.2 | 1.9 | 2.5 | 1.2 | 0 | 5 | 2.1 | 1.7 | 2.5 | 1.4 |
   Recreation | 0 | 5 | 2.5 | 2.2 | 2.9 | 1.3 | 0 | 5 | 2.4 | 2.0 | 2.7 | 1.3 |
CDS-PL | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Total score | 0 | 30 | 17.7 | 15.5 | 19.8 | 8.3 | 0 | 30 | 17.7 | 15.6 | 19.9 | 8.3 |
   Pain severity | 0 | 6 | 3.9 | 3.4 | 4.4 | 1.9 | 0 | 6 | 3.4 | 3.4 | 4.5 | 2.1 |
   Disability | 0 | 16 | 9.0 | 7.9 | 10.1 | 4.4 | 0 | 16 | 7.6 | 7.6 | 9.9 | 4.3 |
   Social interaction | 0 | 8 | 4.8 | 4.1 | 5.5 | 2.7 | 0 | 8 | 4.3 | 4.3 | 5.7 | 2.7 |