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Table 3 - Correlation between pain catastrophizing, central sensitization and impact of fibromyalgia according to genotype (n = 108)

From: Pain catastrophizing is associated with the Val66Met polymorphism of the brain-derived neurotrophic factor in fibromyalgia

  Val/ Val (n = 87) Val/Met (n = 21)
BP-SCI FIQ BP-SCI FIQ
Fibromyalgia Impact Questionnaire (FIQ) r = .64a   r = .74a  
Pain Catastrophizing Scale (BP-PCS) total score r = .39a r = .36a r = .68a r = .55a
BP-PCS - Helplessness r = .47a r = .40a r = .72a r = .58a
BP-PCS - Magnification r = .25b r = .27b r = .54b r = .41a
BP-PCS - Rumination r = .30a r2 = .28a r = .63a r = .55b
  1. a. Correlation is significant at the 0.01 level (2-tailed)
  2. b. Correlation is significant at the 0.05 level (2-tailed)
  3. Brazilian Portuguese Central Sensitization Inventory (BP-SCI); Brazilian Portuguese Pain Catastrophizing Scale (BP-PCS)