Fig. 1From: The effectiveness of pregabalin with or without agomelatine in the treatment of chronic low back pain: a double-blind, placebo-controlled, randomized clinical trialComparison of the mean outcome measures over the time between the group A (pregabalin & placebo) and group B (pregabalin and agomelatine). (BPI: Brief Pain Inventory; RMDQ: Roland-Morris Disability Questionnaire; SF-36: 36-Item Short Form Survey; HADS: Hospital Anxiety and Depression Scale; GHQ-28: General Health Questionnaire – 28.)Back to article page