Pediatric sleep-disordered breathing in Shanghai: characteristics, independent risk factors and its association with malocclusion

Table 3 Univariate analysis of potential risk factors for SDB in children

		Total	Non-SDB	SDB	Prevalence (%)	χ2	P value
Medical history
Allergic rhinitis	Yes	1309	993	316	24.1	68.9	< 0.001
Allergic rhinitis	No	1999	1740	259	13.0	68.9	< 0.001
Adenotonsillar hypertrophy	Yes	391	260	131	33.5	99.3	< 0.001
Adenotonsillar hypertrophy	No	2748	2372	376	13.7	99.3	< 0.001
Asthma	Yes	164	119	45	27.4	11.17	< 0.001
Asthma	No	3231	2683	548	17.0	11.17	< 0.001
Tympanitis	Yes	306	228	78	25.5	14.2	< 0.001
Tympanitis	No	3127	2599	528	16.9	14.2	< 0.001
Family history
Paternal rhinitis history	Yes	1055	837	218	20.7	10.81	< 0.001
Paternal rhinitis history	No	2315	1944	371	16.0	10.81	< 0.001
Maternal rhinitis history	Yes	789	621	168	21.3	10.43	< 0.001
Maternal rhinitis history	No	2600	2176	424	16.3	10.43	< 0.001
Paternal snoring	Yes	2127	1672	455	21.4	58.79	< 0.001
Paternal snoring	No	1157	1033	124	10.7	58.79	< 0.001
Maternal snoring	Yes	634	478	156	24.6	27.61	< 0.001
Maternal snoring	No	2613	2201	412	15.8	27.61	< 0.001
Daily habits/environments
Tobacco exposure	Yes	836	663	173	20.7	7.31	< 0.01
Tobacco exposure	No	2579	2151	428	16.6	7.31	< 0.01
Sleeping position	Supine	1156	956	200	17.3	14.16	< 0.001
	Lateral	1970	1642	328	16.7
	Prone	307	229	78	25.4
Air conditioner	Commonly	401	332	69	17.2	0.062	0.8
Air conditioner	Rarely	3032	2495	537	17.7	0.062	0.8
Air humidifier	Commonly	584	485	99	17.0	0.237	0.63
Air humidifier	Rarely	2849	2342	507	17.8	0.237	0.63
Air cleaner	Commonly	906	758	148	16.3	1.47	0.23
Air cleaner	Rarely	2527	2069	458	18.1	1.47	0.23

ISSN: 1472-6831