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Table 4 Distribution of possible confounders according to neck and low back health outcomes (N = 1,347).

From: Primary care consultation, hospital admission, sick leave and disability pension owing to neck and low back pain: a 12-year prospective cohort study in a rural population

  Primary care consultation Hospital admission Sick leave Disability pension
  No Yes   No Yes   No Yes   No Yes  
  mean/% mean/% p1 mean/% mean/% p1 mean/% mean/% p1 mean/% mean/% p1
Age 50.2 49.4 0.052 50.1 50.4 0.837 50.1 50.0 0.859 50.0 52.4 0.013
Farmer,% 59.0 58.8 0.954 58.9 64.0 0.604 59.3 52.1 0.218 59.0 56.4 0.744
Workload 198.3 201.0 0.677 198.6 203.4 0.786 199.4 187.3 0.239 199.1 185.2 0.332
Education index 2.2 2.1 0.753 2.2 2.3 0.641 2.2 1.8 0.036 2.2 1.6 0.000
Demands 12.8 12.7 0.611 12.8 13.6 0.144 12.8 12.4 0.235 12.8 12.8 0.901
Control 7.1 7.0 0.129 7.1 7.0 0.870 7.1 6.7 0.026 7.1 6.7 0.058
Body mass index 26.3 26.2 0.738 26.3 27.5 0.046 26.4 26.3 0.811 26.3 26.8 0.332
Smokers, % 20.6 24.2 0.248 21.0 32.0 0.182 20.8 28.8 0.103 20.7 38.5 0.007
Snuff users, % 13.2 19.9 0.011 14.0 28.0 0.047 13.6 26.0 0.003 13.8 30.8 0.003
Alcohol consumption 23.4 27.8 0.105 24.2 32.9 0.346 24.1 28.8 0.314 24.1 32.9 0.224
Psychiatric symptoms 1.28 1.32 0.032 1.28 1.42 0.013 1.28 1.38 0.013 1.28 1.37 0.049
Specific back diagnose, % 1.5 22.3 0.000 3.8 56.0 0.000 3.2 31.5 0.000 3.7 38.5 0.000
  1. 1 t-test or Chi2-test.