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Table 1 Baseline characteristics of the sample

From: Is low-back pain a limiting factor for senior workers with high physical work demands? A cross-sectional study

 

n

Mean (95% CI)

SD

% (95% CI)

Age (years)

12,879

56.6

5.4

 

Sex, men/women

7054/5825

  

53.4/46.6

BMI (kg/m2)

 

26.4

5.1

 

Smoking

 No, never

5714

  

48.3 (47.3–49.3)

 Ex-smoker

4110

  

34.3 (33.3–35.2)

 Yes, but not every day

373

  

3.3 (2.9–3.6)

 Yes, every day

1729

  

14.2 (13.5–14.9)

Physical activity during leisure

 Mostly sedentary

1779

  

14.8 (14.0–15.5)

 Light exercise at least 4 h

7202

  

60.9 (59.9–61.9)

 Sports or heavy physical activity at least 4 h per week

2697

  

22.3 (21.5–23.1)

 Training and competing regularly and several times a week

233

  

2.0 (1.7–2.3)

Psychosocial work factors (0–100)

 Support/recognition from colleagues

12,111

77.0 (76.6–77.4)

22.5

 

 Influence at work

12,128

77.5 (77.1–77.9)

23.8

 

Physical activity at work

 Mostly sedentary work that is not physically demanding

5909

  

47.4 (46.3–48.4)

 Mostly standing and walking work that is otherwise not physically demanding

2698

  

23.6 (22.7–24.4)

 Standing or walking work with some lifting- and carrying tasks

2779

  

22.9 (22.0–23.8)

 Heavy or fast work that is physically demanding

787

  

6.2 (5.7–6.7)

  1. BMI Body mass index (kg/m2), n number, SD Standard deviation; % percentage