Timepoint | Baseline | Pre-intervention | Post-intervention | Follow-ups | |||
---|---|---|---|---|---|---|---|
Variable, category, or measure | Screening | Visit 1 | Visit 2 | Visit 3 | 1 months | 2 months | 3 months |
 Demographic information | X | X |  |  |  |  |  |
 Contact information | X |  |  |  |  |  |  |
 Eligibility criteria | X | X |  |  |  |  |  |
 Health history | X | X |  |  |  |  |  |
 Pain history [119] | X | X |  |  |  |  |  |
 NIH PROMIS Positive Affect and Well-being [133] |  | X |  |  |  |  |  |
 Stress and Adversity Inventorya [134] |  | X |  |  |  |  |  |
Feasibility and acceptability | |||||||
 Treatment acceptability |  |  |  | X |  |  |  |
 Treatment expectations [135] |  |  | X |  |  |  |  |
 Blinding effectiveness |  |  |  | X |  |  |  |
 Adverse events |  |  | X | X |  |  |  |
Secondary outcomes and process measures | |||||||
 NIH PROMIS-Short forms (pain intensity, pain interference, depression, sleep disturbance, sleep-related impairment) [133, 136–138] |  | X |  | X | X | X | X |
 | X |  | X | X | X | X | |
 | X |  |  |  |  |  | |
 |  |  | X | X | X | X | |
 Oswestry Disability Index [146] |  | X |  | X | X |  | X |
 Pain Catastrophizing Scale [147] |  | X |  | X | X |  | X |
 Pain Self-Efficacy Questionnaire [148] |  | X |  | X | X |  | X |
 Perceived Stress Scale [149] |  | X |  | X | X | X | X |
 Generalized Anxiety Disorder 2-item [150] |  | X |  | X | X | X | X |
 Multidimensional Assessment of Interoceptive Awareness-2 [151] |  | X |  | X | X |  | X |
 Multidimensional Psychological Flexibility Inventorya [152, 153] |  | X |  | X | X |  | X |
Physical and physiological assessments | |||||||
 Back performance scale [154] |  | X |  |  X |  |  |  |
 Short performance physical battery [155] |  | X |  |  X |  |  |  |
 |  | X | X |  |  |  | |
 Heart rate variability |  |  | X | X |  |  |  |
 Oxygen saturation |  |  | X | X |  |  |  |
Blood pressure | Â | X | X | X | Â | Â | Â |