Table 1.
Demographic and clinical characteristics for the total sample (n = 41).
| Fibromyalgia (n = 22) | Controls (n = 19) | P value | |||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| Demographic variables | |||||
| Age (years) | 47.14 | 9.49 | 34.68 | 12.45 | 0.001 |
| Body mass index$ | 27.83 | 4.17 | 23.12 | 3.37 | 0.001 |
| Years of study | 13.55 | 2.74 | 17.29 | 3.31 | < 0.001 |
| Outcome’s variables | |||||
| Portuguese Profile of Chronic Pain Screen (BP-PCP:S) total score | 71.95 | 15.56 | 14.11 | 15.54 | < 0.001 |
| BP-PCP:S—severity | 25.68 | 3.24 | 6.74 | 6.37 | < 0.001 |
| BP-PCP:S—activity | 27.50 | 9.74 | 4.47 | 7.43 | < 0.001 |
| BP-PCP:S—emotional burden | 18.77 | 5.00 | 2.89 | 4.01 | < 0.001 |
| Brazilian Portuguese Central Sensitization Inventory (BP-SCI) | 71.18 | 13.72 | 21.37 | 11.19 | < 0.001 |
| Clinical variables and psychological measures | |||||
| The American College of Rheumatology (ACR) | |||||
| Widespread pain index (WPI) | 13.81 | 22.50 | |||
| Symptom Severity (SS) Scale | 10.58 | 1.58 | |||
| Beck Depression Inventory (BDI-II) total score | 28.45 | 12.07 | 7.53 | 9.39 | < 0.001 |
| Strait-Trait Anxiety Inventory—short version (STAI-SV)—State scale | 30.00 | 7.34 | 22.32 | 6.48 | 0.001 |
| Strait-Trait Anxiety Inventory—short version (STAI-SV)—Trait scale$ | 27.81 | 3.44 | 18.11 | 4.53 | < 0.001 |
| Brazilian Pain Catastrophizing Scale (B-PCS) total score | 39.27 | 8.40 | 7.37 | 12.57 | < 0.001 |
| Medication use | Yes/no | % Yes | Yes/no | % Yes | |
|---|---|---|---|---|---|
| Psychiatric medication use | |||||
| Benzodiazepine | 4/18 | 18.2 | – | – | – |
| Antidepressant | 12/10 | 54.5 | – | – | – |
| Anticonvulsant | 10/12 | 45.5 | – | – | – |
| Number of days of analgesic use per week in the previous month (< 4 times/> 4 times) | 20/2 | 90.9 | – | – | – |
SD standard deviation.
All P values are based on Mann–Whitney test, except for “regular analgesic use” which is based on Fisher’s exact test. $ = missing data for FM group with n = 21.