“…12 These 2 subscores were identified in the previous study 18 by factor analysis, each including 7 items that on average were rated as moderately painful (mean rating 4-6 on the 11-point scale, PSQ moderate) or as causing minor pain (mean rating <4, PSQ minor). The PSQ total score was calculated as the average rating of items 1, 2, 3, 4, 6,7,8,10,11,12,14,15,16, and 17 (all but the 3 nonpainful items); the PSQ minor score was calculated as the average rating of items 3, 6, 7, 10, 11, 12, and 14; and the PSQ moderate score was calculated as the average rating of items 1, 2, 4, 8, 15, 16, and 17. 18 The original version of the PSQ has been shown to be significantly correlated to a variety of experimentally produced pain intensity ratings, both in control subjects and in patients with chronic pain.…”