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Table 5 Relationship between CPM, trait-anxiety level and pain on the B-PCP:S (n = 47)

From: Association of anxiety with intracortical inhibition and descending pain modulation in chronic myofascial pain syndrome

Source Type III sum of squares df Mean square error F P
Corrected model 24327.85 4 26219.170 2.05 0.10
Dependent variable: Percentage of change in the pain score on numerical pain scale during CPM-TASK a
Parameter β SEM T P Partial eta squared
Intercept 458.80 221.72 2.07 0.04 0.02
B-PCP:Sb −10.56 3.82 −2.76 0.01 0.15
Trait-anxiety −21.55 10.72 −2.01 0.05 0.09
B-PCP:S* Trait-anxiety 0.39 0.17 2.38 0.02 0.12
Analgesic dose used weeklyc −0.03 0.05 −0.07 0.94 0.00
  1. a Conditional pain modulation (CPM).
  2. b Profile of Chronic Pain: Screen for a Brazilian population (B-PCP:S).
  3. b Number of days analgesics were used per week in the last three months (< 4 times/≥ 4 times).