Table 3. Means and standard deviations of pain specific questionnaires in the sample chronic back pain patients, and the two sub samples “neuropathic pain” and “non neuropathic pain”.
| All patients (N = 37a) | neuropathic (N = 18a) | non neuropathic (N = 19a) | Sign. p | |
| PPS | ||||
| affective | 33.2 (10.06)N = 35 | 36.7 (10.34) | 29.5 (8.56)N = 17 | .03 |
| sensory | 19.6 (6.29)N = 36 | 22.1 (6.40) | 17.2 (5.28)N = 18 | .02 |
| Pain VAS | ||||
| present moment | 4.46 (2.19) | 4.89 (2.22) | 4.05 (2.15) | .25 |
| av. last four weeks | 5.72 (2.07) | 5.83 (2.21) | 5.63 (1.98) | .77 |
| av. last three months | 5.35 (1.62) | 5.33 (1.78) | 5.37 (1.50) | .95 |
| average twelve months | 5.61 (1.82)N = 36 | 5.86 (1.78) | 5.36 (1.89)N = 18 | .42 |
P-values reflect a comparison of the means of the sub-samples by a t-test for independent samples.
a
if not stated otherwise.