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Table 1 Background data and differences between military and civilians (missing not shown) (n = 2265).

From: Physical activity is associated with a low prevalence of musculoskeletal disorders in the Royal Norwegian Navy: a cross sectional study

 

Total

Military personnel

Civilians

P

Gender

    

   Male (%)

2001 (88.9)

1550 (94.1)

438 (74.2)

 

   Female (%)

250 (11.1)

97 (5.9)

152 (25.8)

 

Age, mean (years)

38.3

35.2

46.9

P < 0.001*

Physical activity, mean (0–18)

9.3

9.6

8.4

P < 0.001*

Physical stressors index (0–24)

   

P < 0.001**

   Very low (0–4)

377 (17.0)

247 (15.1)

129 (22.8)

 

   Low (5–8)

815 (36.7)

655 (39.9)

156 (27.5)

 

   High (9–12)

693 (31.2)

519 (31.6)

169 (29.8)

 

   Very high (13–24)

338 (15.2)

220 (13.4)

113 (19.9)

 

Body mass index, mean

25.9

25.8

26.1

P = 0.11*

Smoking

   

P = 0.002**

   Non-smoker (%)

1638 (73.2)

1231 (74.9)

396 (68.2)

 

   Smoker (%)

601 (26.8)

412 (25.1)

185 (31.8)

 

Education

   

P < 0.001*

   9–12 years (%)

37 (1.8)

8 (0.5)

28 (5.1)

 

   12–14 years (%)

577(27.4)

194 (12.6)

376 (67.9)

 

   14–16 years (%)

1002 (47.5)

887 (57.6)

111 (20.0)

 

   > 14 years (%)

492 (23.3)

452 (29.3)

39 (7.0)

 
  1. *T-test ** Pearson χ2 test