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Table 2 Sample characteristics

From: Association of anxiety with intracortical inhibition and descending pain modulation in chronic myofascial pain syndrome

Variables Mean (SD) or percentage Median (Q25, Q75)
Age (years) 47.28 (11.51) 48 (39, 56)
Marital status (married/unmarried) 15/47 (yes: 31.91%) ---
Weight (kg) 65.69 (11.59) 65 (56.5, 75)
Height (m) 1.62 (0.17) 1.6 (1.56, 1.64)
Education (years) 13.19 (4.20) 13 (11, 16)
Trait-anxiety 23.89 (6.90) 22.5 (19, 29)
State-anxiety 28.22 (7.80) 26 (22, 34)
Beck depression inventory 15.02 (9.27) 13.5 (9, 19)
Brazilian Portuguese Catastrophizing Scale (B-PCS) 29.36 (12.59) 33 (20, 39)
Pain lasting longer than one year (yes/no) 40/48 (yes: 83.33%) ---
Total score on the Profile of Chronic Pain: Screen for Brazilian population (B-PCP:S) 59.70 (15.75) 62 (49, 71)
Score on B-PCP:S domains   
 Intensity 24.6 (3.3) 25 (23, 27)
 Interference in daily activity 21.98 (9.35) 24 (18, 30)
 Emotional burden 13.11 (6.24) 13 (9, 18)
Number of days analgesics were used per week in the last three months (< 4 times/≥ 4 times)a 22/47 (< 4 times: 46.81%) ---
Smoking (yes/no) 26/47 (yes: 55.32%) ---
Alcohol consumption (yes/no) 26/47 (yes: 55.32%) ---
Presence of other chronic diseases before appearance of pain (yes/no)b 21/47 (yes: 44.68%) ---
Diagnosis of psychiatric disorders (yes/no) 18/47 (yes: 38.30%) ---
Active use of central nervous system medication (yes/no)c 4/47 (yes: 8.51%) ---
  1. a The same patient may have used more than one medication.
  2. b Chronic diseases other than pain: hypertension (n = 12); ischemic heart disease (n = 1); heart attack (n = 1); diabetes mellitus (n = 5); thyroid diseases (n = 2); other chronic diseases listed (n = 0).
  3. c Central nervous medication: tricyclic antidepressant (n = 2); topiromate (n = 1) tylex (n = 1).
  4. Data presented as Mean (SD) or median (interquartile) or proportion (n = 47).