From: Spine day 2012: spinal pain in Swiss school children– epidemiology and risk factors
6-9 years N=99(%) | 10-12 years N=126(%) | 13-16 years N=134(%) | 6-16 years N=359(%) | |
---|---|---|---|---|
Once | 42.4 | 29.4 | 28.4 | 32.6 |
Once a week | 38.4 | 46.0 | 44.0 | 43.2 |
Repeatedly a week | 15.2 | 17.5 | 18.7 | 17.3 |
Daily | 4.0 | 7.1 | 9.0 | 7.0 |