Correlation among pain catastrophizing, depressive symptoms, central sensitization score, sleep quality, and disability due to pain (n = 33)

Variables Responders to CPM-test (n = 20) Non-responders to CPM-test (n = 13)
(1) (2) (3) (4) (5) (1) (2) (3) (4) (5)
Fibromyalgia Impact Questionnaire (1) 1 1
Pain Catastrophizing Scale (2) –0.07 1 0.27 1
Beck Depression Inventory (3) 0.03 0.64** 1 0.25 0.49 1
Pittsburgh Sleep Quality Index (4) 0.21 0.58** 0.59** 1 0.09 –0.13 0.27 1
Central Sensitization Inventory (5) –0.12 0.49* 0.43 0.54* 1 0.74** 0.46 0.49 0.20 1
Left S1-PAG rs-FC (6) –0.13 –0.11 –0.12 –0.07 0.37 –0.40 0.06 –0.03 –0.32 –0.08

CPM-test: conditioned pain modulation test, rs-FC: resting-state functional connectivity, S1: primary somatosensory cortex, PAG: periaqueductal gray.

*P < 0.05, **P ≤ 0.01.

Korean J Pain 2023;36:113~127 https://doi.org/10.3344/kjp.22225
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