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Table 3 Daily hours spent on screen-based media by symptom status.

From: Screen-based activities and physical complaints among adolescents from the Nordic countries

  Daily hours of screen based activity
  Computer use Computer games Television viewing
Physical symptom status M 95% CI M 95% CI M 95% CI
Boys       
   Backache       
Less than weekly 1.60 (1.56 to 1.63) 1.99 (1.95 to 2.03) 2.41 (2.38 to 2.44)
Weekly 2.13 (2.05 to 2.21) 2.40 (2.31 to 2.49) 2.72 (2.65 to 2.79)
   Headache       
Less than weekly 1.61 (1.57 to 1.65) 1.99 (1.95 to 2.04) 2.42 (2.39 to 2.46)
Weekly 1.95 (1.88 to 2.02) 2.29 (2.21 to 2.36) 2.60 (2.54 to 2.66)
Girls       
   Backache       
Less than weekly 1.54 (1.50 to 1.57) 0.66 (0.63 to 0.68) 2.22 (2.19 to 2.25)
Weekly 2.03 (1.96 to 2.09) 0.73 (0.69 to 0.78) 2.52 (2.46 to 2.58)
   Headache       
Less than weekly 1.48 (1.44 to 1.52) 0.66 (0.63 to 0.68) 2.21 (2.17 to 2.24)
Weekly 1.94 (1.89 to 1.99) 0.70 (0.66 to 0.74) 2.42 (2.38 to 2.47)
  1. M-Mean; CI-confidence interval