“…Mean pain intensity at rest was reported in 45 out of the 74 articles included in the systematic review. Most studies used the Visual Analog Scale 174 (VAS; n = 21) 65,69–71,76,78,82,85,89,90,112,114,117,119,120,122,124,126,138,139,141 or the Numeric Rating Scale 175 (NRS; n = 15) 29,62,66,68,75,79,80,83,88,111,113,116,127,128,137 . Other studies used the Knee Injury Osteoarthritis Outcome Score pain subscale 176 (KOOS-P; n = 3) 63,84,134 , Brief Pain Inventory 177 (n = 1) 64 , Oxford Knee Score 178 (OKS; n = 1) 140 , the Quality of Well-Being Scale – Self-administered Pain Scale 179 (QWBS-P; n = 1) 150 , the Short Form 36 bodily pain 180 (SF-36; n = 1) 130 , the Graphic Rating Scale 181 (GRS; n = 1) 133 , Fibromyalgia Impact Questionnaire-Pain 182 (FIQ-Pain, n = 1) 67 and the Verbal Rating Scale 183 (VRS; n = 1) 104 .…”