Table 2.
Measures in the chronic low back pain and fibromyalgia groups.
| Construct | Measures |
|---|---|
| Sex at birth | Sex at birth: (male, female, intersex, unknown, prefer not say), retrieved from EHR |
| Date of birth | Date of birth: (mm/dd/yyyy), retrieved from EHR |
| Body-mass index | Retrieved from EHR |
| All pain-related diagnosis | Retrieved from EHR |
| Race | Race (Choose all that apply): American Indian or Alaska Native, Asian, Black or African American, Native Hawaiian or Pacific Islander, White, Unknown |
| Ethnicity | Ethnicity: Hispanic or Latino, not Hispanic or Latino, unknown |
| Smoking status | Do you smoke or have you smoked? I currently smoke I have previously smoked I have never smoked |
| Alcohol use | Over the past 3 months, how often do you typically drink alcohol? One serving is about 1 small glass of wine (5 oz), 1 beer (12 oz), or 1 single shot of liquor. I do not drink alcohol Less than 3 servings per week ½ to 1 serving per day 1 to 3 servings per day More than 3 servings per day |
| Medication use | Have you been using prescribed medication [opioid], [oral or inhaled cannabinoids], [anti-depressants], [anti-convulsant] during the past 30 days? Yes No Not sure If yes, choose the type of [opioid], [oral or inhaled cannabinoids], [anti-depressants], [anti-convulsant] and include the dosage and frequency |
| Pain duration | How long have you had the type of pain for which you are enrolled in this study? Please list the number of months or years. How long has this type of pain been an ongoing problem for you? < 3 months 3–6 months > 6 months - <1year 1–5 years > 5 years |
| Pain intensity, average of past 7 days | 0–10 NRS from PROMIS-29 Profile v2.0. |
| Pain intensity, at the time of QST testing | 0–10 NRS from PROMIS-29 Profile v2.0. completed during QST |
| Widespread Pain Index | Clinical Fibromyalgia Diagnostic Criteria – Part 1. Widespread Pain Inventory. |
| Symptom Severity Score | Clinical Fibromyalgia Diagnostic Criteria – Part 1. Symptom Severity Score – Part 2a, 2b. |
| Physical function | PROMIS Short Form v2.0 – Physical Function 4a |
| Fatigue | PROMIS Short Form v1.0 – Fatigue 4a |
| Sleep | PROMIS Short Form v1.0 – Sleep Disturbance 4a |
| Neuropathic pain | DN4 questionnaire, two items completed by the patients and the other two by the QST examiner |
| Depression | PHQ-2 |
| Generalized anxiety disorder | GAD-2 |
| Pain Catastrophizing | PCS-4 |
EHR: electronic health records. QST: quantitative sensory testing. DN4: Douleur Neuropathique-4 item. PHQ-2: Patient Health Questionnaire-2 items. GAD-2: Generalized Anxiety Disorder- 2 items. PCS-6: Pain Catastrophizing Scale-6 items.