Table 4.

Intensity of the impacts associated with self-perceived malocclusion, by covariables, among 11-12-year-old Peruvian schoolchildren

Covariables	Intensity of the impacts										p value
	Very little		Little		Moderate		Severe		Very severe
	n	%	n	%	n	%	n	%	n	%
Sex											0.187
Girls	14	19.4	32	44.4	13	18.1	9	12.5	4	5.6
Boys	22	41.4	11	20.8	10	18.9	8	15.1	2	3.8
Age											0.447
11 years	13	37.2	10	28.6	6	17.1	4	11.4	2	5.7
12 years	23	25.6	33	36.7	17	18.9	13	14.4	4	4.4
Education level											0.029
Primary school	23	36.6	22	34.9	9	14.2	7	11.1	2	3.2
High school	13	21.0	21	33.8	14	22.6	10	16.1	4	6.5

Mann- Whitney test was used