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. 2020 Oct 23;4(10):e23893. doi: 10.2196/23893

Table 2.

Preliminary effects: pre-post intervention changes in psychosocial outcomes (n=45).

Psychosocial outcomes Baseline, mean (SD) 3-month follow-up, mean (SD) Mean difference (95% CI) P value
Pain interference (BPIa)b 4.5 (2.1) 4.8 (2.1) 0.3 (−0.3 to 0.8) .31
HRQoLc (RAND-36d)




Physical function 60.9 (24.6) 61.3 (25.4) 0.4 (−3.1 to 3.9) .80

Role physical 17.2 (31.5) 27.2 (36.5) 10.0 (−0.9 to 20.9) .07

Bodily pain 35.3 (13.4) 40.4 (15.9) 5.1 (0.7 to 9.5) .02

General health 46.3 (19.6) 48.9 (19.7) 2.6 (−1.2 to 6.3) .18

Vitality 31.9 (21.0) 34.1 (20.8) 2.2 (−2.4 to 6.8) .34

Social function 50.3 (24.9) 52.8 (24.1) 2.5 (−2.4 to 7.4) .31

Role emotional 56.3 (45.4) 66.7 (40.8) 10.4 (−3.3 to 24.0) .13

Mental health 63.7 (18.1) 65.1 (17.9) 1.3 (−1.2 to 3.8) .29

Change 49.4 (25.3) 55.0 (23.0) 5.6 (0.0 to 11.1) .049
Anxiety (HADS-Ae) 7.9 (3.6) 8.0 (4.0) 0.0 (−0.8 to 0.9) .96
Depression (HADS-Df) 5.8 (3.2) 5.8 (3.9) 0.1 (−0.6 to 0.6) >.99
Self-regulatory fatigue (SRF-18g) 53.7 (9.2) 53.3 (9.2) 0.4 (−2.5 to 1.6) .66
Pain catastrophizing (PCSh)




Rumination 7.4 (3.9) 6.9 (4.0) 0.6 (−1.3 to 0.2) .12

Magnification 3.3 (2.4) 3.0 (2.2) 0.3 (−0.8 to 0.1) .14

Helplessness 8.4 (4.8) 7.6 (5.2) 0.9 (−1.9 to 0.2) .11

Total score 19.2 (9.9) 17.4 (10.4) 1.8 (−3.7 to 0.1) .06
Chronic pain acceptance (CPAQi)




Willingness 14.0 (2.8) 13.1 (3.1) 0.9 (−1.7 to −0.1) .03

Activity engagement 14.3 (3.3) 13.8 (3.3) 0.5 (−1.4 to 0.4) .23

Total score 28.3 (5.2) 26.9 (5.3) 1.4 (−2.7 to −0.2) .02

aBPI: Brief Pain Inventory.

bSubscale of the Brief Pain Inventory (score range 0-10; a higher score indicates higher interference in life).

cHRQoL: health-related quality of life.

dRAND-36: RAND 36-Item scale (score range 0-100; a higher score indicates higher emotional well-being).

eHADS-A: Hospital Anxiety and Depression Scale-Anxiety subscale (score range 0-21; a higher score indicates a higher degree of anxiety).

fHADS-D: Hospital Anxiety and Depression Scale-Depression subscale (score range 0-21; a higher score indicates a higher degree of depression).

gSRF-18: Self-regulatory Fatigue 18 scale (score range 18-90; a higher score indicates higher self-regulatory fatigue).

hPCS: Pain Catastrophizing Scale (score range 0-52; a higher score indicates higher catastrophizing).

iCPAQ: Chronic Pain Acceptance Questionnaire (score range 0-52; a higher score indicates a higher acceptance of pain).