Dentofacial characteristics of oral breathers in different ages: a retrospective case–control study

Progress in Orthodontics

Table 5 Intra-group association tests (Pearson’s x², odds ratio) of qualitative variables—group n3 (19 to 57 years of age)

Variables	OB (n)	OB %	NB (n)	NB %	Total	Pearson x ²	p value	DF	Lilihood x ²	OR	CI 95 %
F	95	47	110	53		1.012	0,314	1	1.012
M	56	53	51	47		1.012	0,314	1	1.012
Total	151		161		312
I	36	32	57	43
II	63	56	58	43		3.773	0.052*	1	3.792	1.72	(0.99; 2.98)
III	14	12	19	14		0.14	0.708	1	0.14
Total	113		134		247
NMx	15	10	8	5
PMx	107	73	122	80		2.862	0.091	1	2.894
RMx	25	17	22	15		0.912	0.34	1	0.923
Total	147		152		299
NM	21	14	16	10
PM	81	55	90	59		1.073	0.3	1	1.075
RM	46	31	47	31		0.564	0.453	1	0.565
Total	148		153		301
NM	42	30	39	26
IM	57	40	61	41		0.242	0.623	1	0.242
SM	43	30	48	33		0.363	0.547	1	0.363
Total	142		148		290
NLAFH	26	18	34	23
ILAFH	100	71	94	63		1.237	0.266	1	1.24
DLAFH	15	11	21	14		0.026	0.873	1	0.026
Total	141		149		290
NP	22	16	26	18
BP	43	31	50	34		0.002	0.964	1	0.002
DP	74	53	70	48		0.444	0.505	1	0.445
Total	139		146		285