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Table 1 Demographic characteristics of the sample (n = 204)

From: Reliability of the Multidimensional Pain Inventory and stability of the MPI classification system in chronic back pain

Dimension

 

Diagnosis chronic back pain (%)

82

Diagnosis fibromyalgia (%)

15

Diagnosis, other (%)

3

Average age, min-max (years)

46.8 (16.7–72.8)

Average beginning of symptoms, min-max (years)

10.4 (0.25–64.5)

Sex: female (%)

71.1

Education: none (%)

1

Education: Grade 10–12 (%)

31

Education: High school graduate (%)

55

Education: College graduate (%)

9

Education: University graduate (%)

4

Employment status: inability for work (%)

50.5

Employment status: full-time (%)

28.9

Smoking: yes (%)

43

Marital status: single (%)

23

Marital status: married (%)

66

Marital status: other (%)

11