| |
Employed (n = 450)
|
Unemployed (n = 636)
|
P-valueb
|
|---|
|
Gender
| | |
0.959
|
|
Female
|
405 (90.0)
|
573 (90.1)
| |
|
Male
|
45 (10.0)
|
63 (9.9)
| |
|
Age group, years
| | |
0.004**
|
|
≤ 40
|
123 (27.3)
|
130 (20.4)
| |
|
41–50
|
182 (40.4)
|
246 (38.7)
| |
|
> 50
|
145 (32.2)
|
260 (40.9)
| |
|
Age at onset, years
| | |
0.002**
|
|
Fatigue
|
36 ± 10.3
|
37.8 ± 9.5
| |
|
Pain
|
36.6 ± 10.2
|
38.4 ± 9.6
| |
|
Illness duration, years
|
9 ± 7.6
|
10.5 ± 8.6
|
0.839
|
|
Comorbid conditionsa
|
|
Fibromyalgia
|
207 (46.0)
|
394 (62.0)
|
< 0.001***
|
|
Degenerative vertebral disease
|
220 (49.0)
|
376 (59.3)
|
0.001***
|
|
Epicondylitis
|
187 (41.6)
|
310 (48.9)
|
0.018*
|
|
Ligamentous hyperlaxity
|
130 (28.9)
|
235 (37.1)
|
0.005**
|
|
Multiple chemical hypersensitivity
|
135 (30.1)
|
230 (36.2)
|
0.035**
|
|
Carpal tunnel syndrome
|
62 (13.8)
|
122 (19.2)
|
0.018*
|
|
Marital status
| | |
0.028**
|
|
Married
|
272 (60.6)
|
428 (67.4)
| |
|
Single
|
107 (23.8)
|
107 (16.9)
| |
|
Separated/divorced
|
60 (13.4)
|
90 (14.2)
| |
|
Widow
|
10 (2.2)
|
10 (1.6)
| |
|
Profession
| | |
< 0.001***
|
|
Unskilled work
|
213 (47.3)
|
262 (41.2)
| |
|
Skilled work
|
105 (23.3)
|
179 (28.1)
| |
|
Administrative/office work
|
92 (20.4)
|
111 (17.5)
| |
|
Education/teaching
|
14 (3.1)
|
15 (2.4)
| |
|
Self-employed
|
7 (1.6)
|
7 (1.1)
| |
|
Liberal profession
|
16 (3.6)
|
23 (3.6)
| |
|
Arts and crafts
|
1 (0.2)
|
5 (0.8)
| |
|
Student
|
2 (0.4)
|
1 (0.2)
| |
|
Housewife
|
0 (0)
|
33 (5.2)
| |
|
Educational level
| | |
0.506
|
|
Elementary (primary) school
|
69 (15.3)
|
109 (17.1)
| |
|
Graduate
|
66 (14.7)
|
105 (16.5)
| |
|
High school/vocational training
|
188 (41.8)
|
248 (39.0)
| |
|
University
|
126 (28.0)
|
169 (26.6)
| |
|
Literate
|
1 (0.2)
|
5 (0.8)
| |
- Data are given as numbers of cases (percentages) unless otherwise indicated
- *Significance at 0.05
- **Significance at 0.01
- ***Significance at 0.001
- a Because participants may report more than one comorbid illness, column numbers do not add up to the total sample. b Data analysis was performed using Chi-square test for categorical variables
