Table10
- Health x "quite often" -
(%)

7th graders 8th graders 9th graders Boys Girls
Get diarrhea easily 2.7 3.1 3.6 4.4 2.0
Have no appetite 5.9 4.6 4.8 6.1 3.8
Feel sick to your stomach easily 4.6 5.1 5.4 5.6 4.6
Hard trouble sleeping 10.6 12.2 12.8 12.1 11.8
Feel irritated 14.5 16.0 14.3 14.4 15.5
In a daze 17.2 18.0 21.9 17.9 20.5
Cannot concentrate 15.4 20.7 23.0 21.9 18.4
Have stiff, aching shoulders 18.2 21.0 23.0 17.5 24.5
TIre easily 27.3 29.1 29.7 26.5 31.1