Skip to main content

Table 3 Mean scores for outcome measures as predictor variables of employment status among participants (n = 1086)

From: Unemployment and work disability in individuals with chronic fatigue syndrome/myalgic encephalomyelitis: a community-based cross-sectional study from Spain

Measures

Employed (n = 450)

Unemployed (n = 636)

p-valuea

VAS-pain

7.3 ± 1.9

7.6 ± 1.8

<  0.001***

VAS-fatigue

8.1 ± 1.0

8.4 ± 1.2

<  0.001***

FIQ

57.0 ± 7.4

59.6 ± 6.2

<  0.001***

FIS-40

 Global score

123.1 ± 22.7

133.3 ± 19.8

<  0.001***

 Physical

34.2 ± 4.9

36.1 ± 3.7

<  0.001***

 Cognitive

30.3 ± 7.0

32.7 ± 6.9

<  0.001***

 Psychosocial

58.4 ± 13.2

64.6 ± 11.2

<  0.001***

D-FIS-8

23.3 ± 5.0

25.8 ± 4.4

<  0.001***

SCL-90-R

 Global severity index

1.6 ± 0.8

1.9 ± 0.8

<  0.001***

 Positive symptom distress index

2.4 ± 0.5

2.6 ± 0.5

<  0.001***

 Global positive symptom

59.5 ± 17.9

62.9 ± 17.6

0.002**

 Somatization

2.4 ± 0.8

2.7 ± 0.8

<  0.001***

 Obsessive-compulsive

2.4 ± 0.9

2.6 ± 0.9

0.001***

 Interpersonal sensitivity

1.4 ± 1.0

1.5 ± 1.0

0.040*

 Depression

2.0 ± 0.9

2.3 ± 0.9

<  0.001***

 Anxiety

1.5 ± 1.0

1.7 ± 1.0

<  0.001***

 Hostility

1.2 ± 1.0

1.2 ± 1.0

0.400

 Phobic anxiety

1.1 ± 1.0

1.5 ± 1.1

<  0.001***

 Paranoid ideation

1.1 ± 1.0

1.2 ± 1.0

0.544

 Psychoticism

1.0 ± 0.8

1.1 ± 0.8

0.007**

HADS

 Global score

20.5 ± 4.6

22.6 ± 4.5

0.002**

 Anxiety

10.7 ± 4.8

11.1 ± 4.7

0.209

 Depression

9.8 ± 4.8

11.3 ± 4.6

<  0.001***

PSQI

 Global score

12.7 ± 4.4

14.0 ± 4.2

<  0.001***

 Subjective sleep quality

2.0 ± 0.9

2.2 ± 0.9

0.001**

 Sleep latency

1.9 ± 1.0

2.1 ± 0.9

0.002**

 Sleep duration

1.7 ± 0.9

1.6 ± 1.0

0.037*

 Habitual sleep efficiency

1.4 ± 1.2

1.7 ± 1.2

<  0.001***

 Sleep disturbances

2.0 ± 0.7

2.2 ± 0.6

<  0.001***

 Use of sleeping medication

1.6 ± 1.4

2.0 ± 1.4

<  0.001***

 Daytime dysfunction

2.2 ± 0.9

2.2 ± 0.9

0.649

SF-36

 Physical functioning

40.3 ± 21

28.5 ± 18.9

<  0.001***

 Physical role

8.8 ± 20.8

3.1 ± 13.1

<  0.001***

 Bodily pain

24.5 ± 19.2

17.3 ± 17

<  0.001***

 General health

26.3 ± 15.9

21.3 ± 14.4

<  0.001***

 Vitality

16.9 ± 14.1

13.2 ± 14.1

<  0.001***

 Social role functioning

37.6 ± 24.4

26.8 ± 22.2

<  0.001***

 Emotional role functioning

47.0 ± 45.5

38.3 ± 45.1

0.001***

 Mental health

44.7 ± 20.7

41.6 ± 21.7

0.012*

 Physical component

28.0 ± 7.4

24.7 ± 6.4

<  0.001***

 Mental component

35.1 ± 12.7

32.9 ± 13.1

0.004**

  1. Data are given as mean ± standard deviation (SD) in the sample
  2. Abbreviations: VAS Visual analogue scale, FIQ Fatigue intensity questionnaire, FIS Fatigue impact scale, SCL-90-R Symptom checklist-90-revised, HADS Hospital anxiety and depression scale, PSQI Pittsburgh sleep questionnaire index, SF-36 Short form 36-item health survey
  3. *Significance at 0.05
  4. **Significance at 0.01
  5. ***Significance at 0.001
  6. aData analysis using the Mann-Whitney U test for independent samples
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us