Figure 4.

Score changes of the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) scores at baseline and at 6 weeks after pregabalin initiation. The average score at each time point is connected to indicate the tendency for change. Each of the items consists of raw data, followed by box and whisker plot. PaD: pain-related disorders, GaD: gait disturbance, LuD: lumbar spine dysfunction, SoD: social life disturbance, and PsD: psychological disorders. The scores for PaD, LuD, GaD, and PsD show a significant improvement after PGB treatment (identified by an asterisk), while that for SoD shows an improvement tendency with no significance.