Table 4.

Variables evaluation: family structure, who they live with, birth order, number of people living in the house and how many rooms are there, according to breathing pattern.

Breathing pattern
Variables	Nasal		Oral		TOTAL		P value
	n	%	n	%	n	%
• Family structure - parents
Divorced	17	34.0	33	66.0	50	100.0	p(1) = 0.1435
Married	43	50.0	43	50.0	86	100.0
Widower / widow	4	57.1	3	42.9	7	100.0
Total Group	64	44.8	79	55.2	143	100.0
• Who they lived with With both (father and mother)
	42	49.4	43	50.6	85	100.0	p(2) = 0.3268
The mother only	17	40.5	25	59.5	42	100.0
Another situation (grandparents. uncles/aunts)	5	31.3	11	68.7	16	100.0
Total Group	64	44.8	79	55.2	143	100.0
• Birth order
1st	28	45.2	34	54.8	62	100.0	p(2) = 0.6084
2nd	16	39.0	25	61.0	41	100.0
3rd or more	20	50.0	20	50.0	40	100.0
Total Group	64	44.8	79	55.2	143	100.0
• Number of people living in the house
2 or 3	12	52.2	11	47.8	23	100.0	p(2) = 0.5075
4	16	41.0	23	59.0	39	100.0
5	17	38.6	27	61.4	44	100.0
6 or more	19	52.8	17	47.2	36	100.0
Total Group(3)	64	45.1	78	54.9	142	100.0
(3) - We did not have this information for one of the students.
• Number of rooms/bedrooms in the house
1	7	28.0	18	72.0	25	100.0	p(2) = 0.1022
2	12	40.0	18	60.0	30	100.0
3 or more	45	51.1	43	48.9	88	100.0
Total Group	64	44.8	79	55.2	143	100.0

(*) - Significant difference at 5.0%.

(1) - By means of Fisher's Exact Test.

(2) - By means of the Pearson's Chi-Squared test.