Table 3. Basic results of the primary, junior high, and high school level students.

	PRIMARY		MIDDLE		HIGH
	“before” pain	“now” pain	“before” pain	“now” pain	“before” pain	“now” pain
Min.	0.00	0.00	0.00	0.00	0.00	0.00
1st Qu	0.00	0.00	0.00	0.00	1.00	0.00
Median	0.00	0.00	1.00	0.00	1.00	1.00
Mean	0.45	0.30	0.66	0.34	1.13	0.67
3rd Qu	1.00	1.00	1.00	1.00	2.00	1.00
Max.	2.00	2.00	3.00	2.00	3.00	2.00