Table 5.

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

Covariables	n	Performances with impacts				p value
		Mean	S.D.	Range	Quartiles
Sex						0.725
Girls	72	1.32	0.71	1 – 5	(1, 1, 1)
Boys	53	1.28	0.50	1 – 3	(1, 1, 2)
Age						0.883
11 years	35	1.29	0.57	1 – 3	(1, 1, 1)
12 years	90	1.31	0.65	1 – 5	(1, 1, 1.25)
Education level						0.344
Primary school	63	1.24	0.50	1 – 3	(1, 1, 1)
High school	62	1.37	0.73	1 – 5	(1, 1, 2)

Mann- Whitney test was used