Table 1.

Frequent Complaints of Youngsters in Japan^*

Elementary School Students		Junior High School Students	Boys/Girls
Persistent need to yawn	62%	Desire to sleep	73.8%/80.8%
Desire to sleep	58%	Persistent need to yawn	43.6%/69.1%
Desire to lie down	47%	Desire to lie down	43.2%/47.2%
Eyestrain	33%	Eyestrain	40.7%/44.7%
Difficulty in sitting straight	29%	Difficulty with memorization	35.2%/33.6%
Difficulty with memorization	28%	Neck stiffness	29.3%/35.1%
Irritation	27%	Lumbago	26.5%/23.2%
Neck stiffness	26%	Low activity	21.3%/28.0%
Low activity	25%	Hypersensitivity	20.0%/27.0%
Difficulty in concentrating	25%	Difficulty in concentrating	21.0%/23.8%
Hypersensitivity	24%	Irritation	20.5%/24.2%
Thirst	21%
Making many mistakes	20%

^*Only items comprising more than 20% of complaints are listed.