Fig. 1From: Pregabalin versus gabapentin in the treatment of sciatica: study protocol for a randomised, double-blind, cross-over trial (PAGPROS)Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) figure for Pregabalin and Gabapentin Prospective Clinical Trial for the Treatment of Sciatica: A Randomised, Double-Blind, Cross-over Study (PAGPROS). HLOC Health Locus of Control ScaleBack to article page