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Table 3 Descriptive statistics for the total group of individuals.

From: Analyzing musculoskeletal neck pain, measured as present pain and periods of pain, with three different regression models: a cohort study

  Baseline values Intra-individual variability
  Mean (min; max) Average individual sd
  Women Men ( sd of average sd)
Work/study time (h/week) 36 (0; 82) 35 (0; 98) 11.6 (8.06)
Physical activity (h/week) 4 (0; 40) 4 (0; 40) 2.0 (2.32)
  % % Proportion of persons in same category all 3 years, %
Overweight 8 15 90
Breakfast regularly 85 79 83
Snuff use, non-smoking 2 10 96
Smoking 6 5 94
High work/study demands    43
   No too high demands 49 71  
   High demands, not affecting home life 34 20  
   High demands, affecting home life 17 9  
High home life demands 3 6 88
Good superiors 95 93 87
Good colleagues 94 93 88
Computer use pattern    49
   No 4 h periods without a break (0) 66 48  
   One 4 h period without a break (1) 12 15  
   At least two 4 h periods without a break (2) 22 37  
Asthma 8 7 96
Perceived stress 65 46 52
  1. Baseline values and variability within individuals over the years. Number of women at baseline: 579–586*, number of men at baseline: 538–540. The total number of respondents varied because of incomplete data.