↵^a Model 1: variables entered were sex, Pain Catastrophizing Scale (PCS) score, short-form Depression Anxiety Stress Scale (DASS-21) score, sleep quality, composite numeric rating score for pain (NRS composite), and Brachial Plexus Pain Provocation (BPPT) test score. Only results for variables that reached significance are shown. Model 2: variables entered were the same as for model 1 as well as clinical pressure pain score. All=whole cohort, NS=not significant.