Table 1. Changing trends of practice and belief by ages of students.

Items	Linear regression equations	R2	p
Raw-freshwater fish-eating practice
Girls	Y = 1.0274X-1.2339	0.90	0.000
Boys	Y = 1.9114X-5.4084	0.97	0.000
Both	Y = 1.4575X-3.2053	0.99	0.000
Belief on the ability not to eat raw freshwater fish in future
Girls	Y = -0.6915X+94.7100	0.44	0.036
Boys	Y = -1.4572X+96.3760	0.81	0.000
Both	Y = -1.0508X+95.2790	0.70	0.003