. 2017 Mar 1;30(1):31–38. doi: 10.1089/ped.2016.0681

Table 4.

Current Variables at Age 7 and Their Association with Snoring Frequency at Age 7 (n = 609)

		Snoring frequency
Variable	N (%)	Non-habitual (n = 480)	Habitual (n = 129)	p
BMI^a	16.48^b	16.33	17.01	0.012
BMI change	0.38^c	0.26	0.82	0.023
ETS^d	118 (19)^e	81 (17)	37 (29)	0.003
Dog ownership^f	269 (44)	208 (43)	61 (47)	0.425
Cat ownership^g	134 (22)	109 (23)	25 (19)	0.472
TRAP^h	148 (24)	104 (22)	44 (34)	0.004
Aeroallergen sensitizationⁱ	254 (42)	196 (41)	58 (45)	0.422
Food sensitization^j	12 (2)	11 (2)	1 (1)	0.324
Rhinitis^k	271 (45)^l	200 (42)	71 (55)	0.009
Asthma^m	95 (16)	58 (12)	37 (29)	<0.001
URIⁿ	0.87^o	0.76	1.26	0.002
Eczema^p	82 (13)	55 (11)	27 (21)	0.007
Maternal HS	130 (22)^q	78 (17)	52 (41)	<0.001
Paternal HS	310 (53)^q	222 (48)	88 (73)	<0.001

^{^a}

Defined as the mean value as defined at age 7.

^{^b}

Represents mean numerical BMI at age 7. Unavailable data for 20 children.

^{^c}

Represents mean change in numerical BMI from ages 4 to 7. Unavailable data for 53 children.

^{^d}

ETS exposure as defined by parental report of more than 1 cigarette smoked by residents of the child's household through age 7.

^{^e}

Unavailable data for 53 children.

^{^f}

One or more dog in the child's household at age 7.

^{^g}

One or more cat in the child's household at age 7.

^{^h}

TRAP exposure as defined by a land-use regression model.

^ⁱ

Defined as atleast 1 positive (≥ 3 mm greater than negative control) to a panel of 15 aeroallergens.

^{^j}

Positive SPT to milk and/or egg.

^{^k}

Defined by parental report of symptoms of sneezing, runny, or blocked nose in the preceding 12 months outside of a cold or flu.

^{^l}

Unavailable data for 3 children.

^{^m}

As defined by American Thoracic Society guidelines by either spirometry or methacholine challenge test.

^ⁿ

Upper respiratory tract conditions (cold, ear infection, sinus infection, strep throat, tonsillitis, respiratory flu, colored drainage) were defined as the mean number as described by parental report in the past 12 months.

^{^o}

Represents mean number of URIs reported by parents in preceding 12 months.

^{^p}

Parental report of frequent skin scratching, skin redness, red spots, or rough and dry skin ≥6 months.

^{^q}

Missing data for 25 parents.