Progress in Orthodontics

Table 9 Dental health component of the IOTN: frequencies by gender

From: Prevalence of malocclusions, oral habits and orthodontic treatment need in a 7- to 15-year-old schoolchildren population in Tirana

IOTN	Males	Females	Chi-square test
	n(%)	n(%)	Chi-square	P
1	133 (10.6)	174 (12.8)	2.880	0.090
2	188 (15.0)	198 (14.6)	0.053	0.817
3	417 (33.2)	430 (31.6)	0.654	0.419
4	464 (36.9)	512 (37.6)	0.121	0.728
5	55 (4.4)	46 (3.4)	1.479	0.224

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