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Table 2 Sociodemographics and disease-specific characteristics of study participants

From: Health utilities for chronic low back pain

Variable

Healthy participants n = 126

Patients with chronic low back pain n = 32

Sex (% female)

54%

59%

Age in years (mean, SD)

29.95 (9.25)

41.03 (12.85)

Income group (%)

  

    <1000 €/month

10%

16%

    1000–2000 €/month

2%

13%

    2000–3000 €/month

56%

48%

    3000–4000 €/month

30%

19%

    >4000 €/month

2%

3%

Having idea of what low back pain is (%)

94%

100%

Friends/family members with low back pain (%)

62%

66%

Family history of LBP (positive, %)

-

56%

Disease duration in years (mean, SD)

-

15.48 (9.48)

Roland Morris disability index

  

    light (%)

-

72%

    moderate (%)

-

25%

    severe (%)

-

3%

Degree health affected productivity while working (0 to 1) (WPAI) (mean, SD)

-

0.18 (0.18)

Degree health affected regular activities (0 to 1) (WPAI) (mean, SD)

-

0.28 (0.24)

Depressive Symptoms (CES-D)

(mean, SD)

-

12.06 (7.52)

HU own disease (0 to 1) (mean, SD)

-

0.93 (0.13)

Pain own disease (100 mm VAS) (mean, SD)

-

22.25 (21.60)

  1. SD Standard Deviation, WPAI Work Productivity and Activity Impairment Questionnaire, CES-D Center for Epidemiological Studies Depression Scale, VAS Visual Analogue Scale, − not applicable