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Table 2 Psychosocial and neurophysiological measures

From: A feasibility study on yoga’s mechanism of action for chronic low back pain: psychological and neurophysiological changes, including global gene expression and DNA methylation, following a yoga intervention for chronic low back pain

Construct Measure T1 mean (SD) T2 mean (SD) 95% CI (lower, upper)
Pain severity BPI SF – pain now 2.9 (2.3) 0.9 (0.9) 0.57, 3.48
BPI SF – average 3.8 (1.4) 2.1 (1.6) 0.30, 3.11
BPI SF – worst pain 5.4 (2.1) 2.3 (1.7) 1.29, 4.77
BPI SF – least pain 1.27 (1.42) 0.44 (.5)  − 0.06, 1.71
Pain interference BPI SF – pain interference 17.5 (14.4) 6.3 (8.0)  − 0.9, 22.51
Pain self-efficacy Pain self-efficacy 6.1 (2.4) 7.7 (1.8)  − 3.09, − 0.08
Emotion regulation ERQ reappraisal 29.9 (8.3) 29.4 (3.4)  − 3.77, 4.69
ERQ suppression 15.9 (7.9) 13 (7.9)  − 0.31, 4.31
Pain sensitivity Mechanical pain sensitivity – control 1.6 (1.6) 1.7 (1.1)  − 1.42, 1.22
Mechanical pain sensitivity – pain site 2.6 (2.0) 1.4 (.65)  − 0.14, 2.48
Cold Pain Threshold – control 17.2 (8.7) 17.1 (7.7)  − 6.47, 6.59
Cold Pain Threshold – pain site 13.3 (8.0) 10.3 (2.9)  − 1.09, 7.07
Heat Pain Threshold – control 40.9 (3.6) 41.4 (3.4)  − 2.76, 1.87
Heat Pain Threshold – pain site 41.1 (2.7) 42.0 (3.2)  − 2.36, 0.68
Pressure Pain Threshold – control 248.3 (109.6) 276.5 (97.5)  − 84.15, 27.74
Pressure Pain Threshold – pain site 256.3 (80.4) 283.3 (96.6)  − 93.69, 39.69
  1. BPI SF Brief Pain Inventory Short Form, ERQ Emotion Regulation Questionnaire