Table 1

Demographic and clinical characteristics of healthy controls and patients with somatoform pain

	Group; mean (SD) [range]^*

Characteristic	Controls	Patients
Age, yr	48.79 (12.25) [24–64]	46.62 (12.49) [22–68]
Sex, no. male:female	7:12	4:17
Medication, no.
Antidepressants	—	10
Analgesics/relaxants/NSAIDs	—	10
Anxiolytics	—	1
BDI score	4.43 (4.70)^† [0–16]	17.84 (9.03)^† [3–37]
BPI item (scale)
1: Pain within the last week (yes/no)	19 no^†	21 yes^†
2: Pain today (yes/no)	19 no^†	21 yes^†
3: Pain at its worst during the last week (0–10)	—	7 (2.25)^†
4: Pain at its least during the last week (0–10)	—	4.21 (2.5)^†
5: Pain on the average (0–10)	—	5.63 (2.1)^†
6: Pain right now (0–10)	—	5.53 (2.9)^†
8: Pain relief by therapy (0–10)	—	5.50 (2.8)^†
9: Impairment (0–10)	—
9A: General activity	—	5.74 (2.6)^†
9B: Mood	—	4.84 (2.9)^†
9C: Walking ability	—	4.32 (3.1)^†
9D: Normal work	—	5.37 (2.5)^†
9E: Relation with other people	—	4 (2.6)^†
9F: Sleep	—	4.89 (3.0)^†
9G: Enjoyment of life	—	4.86 (2.8)^†
SCL-90-R
Global severity index	0.28 (0.28)^†	0.96 (0.56)^†
Somatization	0.34 (0.31)^†	1.4 (0.64)^†

BDI = Beck Depression Inventory; (39) BPI = Brief Pain Inventory; (26) NSAID = nonsteroidal anti-inflammatory drug; SCL-90-R = Symptom Checklist 90 R; (42) SD = standard deviation.
↵* Unless otherwise indicated.
↵† Significant group differences, p < 0.05.