Table 1.

Demographic and clinical data of the patients (n = 125)

	OBT (n = 43)	CBT (n = 42)	AP (n = 40)
	Mean SD (Range)	Mean SD (Range)	Mean SD (Range)
Age (in years)	43.23	49.13	47.46
	9.03	10.03	9.75
	(21–59)	(22–66)	(21–67)
Duration of pain (in years)	8.98	9.08	8.73
	10.11	8.50	8.77
	(1.5–43)	(0.5–36)	(0.5–43)
Number of painful regions	7.41	6.74	7.06
	1.81	2.18	2.07
	(4–10)	(3 – 10)	(3–10)
Number of tender points	16.66	17.25	16.88
	3.93	4.47	4.33
	(11–18)	(11–18)	(11–18)
Mean tender point pain intensity	5.73	4.59	4.21
	2.14	1.49	1.73
	(1.7–8.3)	(1.9–7.3)	(0–10)
Number of physician visits	36.87	30.55	34.25
	15.15	16.20	16.33
	(18–69)	(4–86)	(14–84)
Drug (n/day of amytriptiline 25 mg)	3.62	3.16	3.36
	2.16	3.62	2.78
	(0–9)	(0–16)	(0–12)
Treatment expectation	4.33	4.30	4.06
	1.17	1.07	0.99
	(2–6)	(2–6)	(2–6)
Treatment satisfaction (first session)	4.39	4.30	3.94
	0.99	0.81	0.87
	(3–6)	(3–5)	(3–5)
	n (%)	n (%)	n (%)
Occupational status
Working	17 (39.5)	19 (45.2)	20 (50.0)
Unemployed	16 (37.2)	16 (38.1)	12 (30.0)
Workers' compensation	3 (7.0)	2 (4.8)	3 (7.5)
Retired	7 (16.3)	4 (9.5)	3 (7.5)
Student	0 (0.0)	1 (2.4)	2 (5.0)

AP, attention-placebo; CBT, cognitive behavior therapy; OBT, operant behaviour therapy; SD, standard deviation.