Fig. 2From: Yoga versus education for Veterans with chronic low back pain: study protocol for a randomized controlled trialDefense and Veterans Pain Rating Scale. The Defense and Veterans Pain Rating Scale (DVPRS), developed by the Army Surgeon General Pain Management Task Force, is a validated patient-reported pain assessment tool [69, 70]. This integrated graphic tool incorporates a numerical rating scale, descriptors for each numerical rating, “traffic light” color-coding, and a faces scaleBack to article page