Table 1 Socio-demographic characteristics of females with fibromyalgia at baseline

Age (years)^a

50.7 (10.6)

50.9 (6.7)

0.935

Body mass index (kg/m2)^a

28.8 (4.5)

26.6 (3.5)

0.147

Duration of symptoms (years)^a

20.1 (8.0)

19.4 (6.9)

0.791

Number of tender points (1 to 18 points)^a

16.9 (1.8)

17.2 (1.3)

0.563

Number of specific drugs (anti depressives, muscular relaxants, analgesics)^a

1.3 (0.8)

1.5 (0.8)

0.379

Employment status, n (%):^b

0.750

Blue collar

8 (53.3)

6 (40.0)

White collar

2 (13.3)

3 (20.0)

Unemployed

5 (33.3)

6 (40.0)

Education level, n:^b

0.184

Unfinished studies

1 (6.7)

1 (6.7)

Primary school

9 (60.0)

6 (40.0)

Secondary school

1 (6.7)

6 (40.0)

University degree

4 (26.7)

2 (13.3)