Table 1. Number of students reporting pain “before” and “now” in different sections of the spine at the primary, junior high, and high school levels.

	C “before”	Th “before”	L “before”	C “now”	Th “now”	L “now”	Numer of pupils
Primary school level	14	6	15	12	2	10	80
Junior high school level	19	9	31	7	5	15	93
High school level	20	10	41	7	5	30	64
Number of people	53	25	87	26	12	55	237

C: cervical spine, Th: thoracic spine, L: lumbar spine