Table 5 Prevalence of Emotional and Behavioral Problems

Category	1st grade		3rd grade		5th grade
	cut-off1) / n	Prevalence	cut-off / n	Prevalence	cut-off / n	Prevalence
Total	70 / 1,577	4.4%	56 / 1,461	3.8%	39 / 1,227	3.2%
Boys	25 / 807	3.1%	26 / 737	3.5%	18 / 631	2.9%
Girls	45 / 770	5.8%	30 / 724	4.1%	21 / 596	3.5%
χ2	6.22*		.38		.45

The number of subjects who scored above the cut-off for problems
p<.05