Table 2 Clinical characteristics of overall sample

Duration of FM symptoms^c, n (%)

0.517

3-6 months

10 (11.4)

3 (17.6)

2 (6.1)

5 (13.2)

7-11 months

4 (4.5)

0 (0.0)

2 (6.1)

2 (5.3)

1-5 years

46 (52.3)

8 (47.1)

22 (66.7)

16 (42.1)

6-10 years

20 (22.7)

5 (29.4)

4 (12.1)

11 (28.9)

> 10 years

7 (8.0)

1 (5.9)

3 (9.1)

3 (7.9)

Time since diagnosis, years

0.983

Mean (SD)

3.2 (2.9)

3.2 (2.5)

3.1 (2.6)

3.4 (3.3)

Median

2

3

2

2

Number of positive MTPS points

0.165

Mean (SD)

13.0 (3.4)

14.4 (2.9)

12.6 (3.1)

12.7 (3.9)

Median

13

15

12

12

Comorbid conditions^d

Anxiety, n (%)

67 (76.1)

12 (70.6)

26 (78.8)

29 (76.3)

0.808

Sleep Disturbance/Insomnia, n (%)

52 (59.1)

10 (58.8)

22 (66.7)

20 (52.6)

0.477

Chronic Fatigue Syndrome, n (%)

46 (52.3)

13 (76.5)

17 (51.5)

16 (42.1)

0.055

Depression, n (%)

40 (45.5)

6 (35.3)

15 (45.5)

19 (50.0)

0.618

Headache/Migraine, n (%)

30 (34.1)

6 (35.3)

7 (21.2)

17 (44.7)

0.113

Restless Leg Syndrome, n (%)

22 (25.0)

8 (47.1)

8 (24.2)

6 (15.8)

0.043

Irritable Bowel Syndrome, n (%)

16 (18.2)

3 (17.6)

4 (12.1)

9 (23.7)

0.450

Raynaud's Syndrome, n (%)

4 (4.5)

1 (5.9)

1 (3.0)

2 (5.3)

1.00

Other, n (%)

6 (6.8)

1 (5.9)

1 (3.0)

4 (10.5)

0.562

Number of comorbid conditions, n (%)

0.934

0

5 (5.7)

1 (5.9)

1 (3.0)

3 (7.9)

1

15 (17.0)

2 (11.8)

5 (15.2)

8 (21.1)

2

16 (18.2)

4 (23.5)

6 (18.2)

6 (15.8)

≥3

52 (59.1)

10 (58.8)

21 (63.6)

21 (55.3)

Number of comorbid conditions^e

0.637

Mean (SD)

3.4 (1.8)

3.8 (2.0)

3.2 (1.5)

3.5 (2.1)

Median (range)

3 (1-8)

4 (1-7)

3 (1-6)

3 (1-8)