Depression Prevalence in Neuropathic Pain and Its Impact on the Quality of Life

Table 2

Link between depression and the characteristics of the neuropathic pain.

	Depression score	r
NP4 score	—	0.28	0.025
Diabetic neuropathy	12.67	—	0.001
Postherpetic pain	11.09
Pain of rheumatic origin	7.31
Others	13.17
VAS score	—	0.41	0.001
Pain evolution		—	NS
≥6 months	10 (5.33)
<6 months	8.33 (4.9)
Treatment duration	—	0.31	0.013
Mean BPI score	—	0.59	0
Activity	—	—	0.32
Humour	—	—	0.32
Walking	—	0.49	0
Steady work	—	—	0.16
Relation with others	—	0.5	0
Sleep	—	0.25	0.04
Joy of living	—	0.42	0.001

Student t-test; ANOVA; chi-square test; (): standard deviation. NP4: Neuropathic Pain 4 questionnaire; VAS: Visual Analogic Scale; NS: nonsignificant; BPI: Brief Pain Inventory.