Table 4.

Snoring and indoor pollutants

		Houses of non-snoring children				Houses of snoring children
		n1	GM2	Min	Max	n1	GM2	Min	Max	P
TVOCs
Living room	Summer	47	11	1	254	32	15	2	204	>0.05
	Winter	52	15	1	247	34	22	1	575	>0.05
HCHO
Living room	Summer	48	7	ND	34	32	6	ND	26	>0.05
	Winter	51	15	2	92	33	19	ND	92	>0.05
Bedroom	Summer	48	9	ND	126	32	8	ND	47	>0.05
	Winter	49	16	2	84	33	18	2	98	>0.05
NO2
Living room	Summer	48	37	11	244	32	41	8	511	>0.05
	Winter	51	38	9	314	32	48	6	345	>0.05
Bedroom	Summer	48	32	6	293	32	31	6	199	>0.05
	Winter	50	33	6	267	32	56	8	511	0.015

ND = not detectable

¹ Missing data or lost to follow-up present

² Geometric mean of pollutant concentration (μg/m³)