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Table 1 Age, sex and pain prevalence by school year in a cohort of Danish school children (CHAMPS Study-DK)

From: Musculoskeletal pain distribution in 1,000 Danish schoolchildren aged 8–16 years

  School year 1
(August 2011 to June 2012)
School year 2
(August 2012 to June 2013)
School year 3
(August 2013 to June 2014)
Total 982 (100.0) 1100 (100.0) 1033 (100.0)
Girls, n (%) 512 (52.1) 576 (52.4) 539 (52.2)
Mean age, years (SD) 10.7 (SD 1.4) 11.6 (SD 1.4) 12.5 (SD 1.4)
Spinal pain, % (95% CI) 28.8 (26.1; 31.7) 33.6 (30.9; 36.5) 31.2 (28.4; 34.1)
Upper extremity pain, % (95% CI) 22.6 (20.1; 25.3) 23.8 (21.4; 26.4) 22.0 (19.6; 24.6)
Lower extremity pain, % (95% CI) 60.1 (57.0; 63.1) 58.3 (55.3; 61.2) 53.1 (50.1; 56.2)
No pain, % (95% CI) 28.5 (25.8; 31.4) 27.1 (24.5; 29.8) 30.8 (28.0; 33.7)