. 2016 Apr 18;9:83–91. doi: 10.2147/JAA.S85624

Table 1.

Association of asthma and SDB

Author (year)	Country	N	Male	Mean age (years)	Asthma diagnosis	SDB diagnosis	Prevalence of asthma (%)	Prevalence of SDB (%)
Lu et al (2003)²¹	Australia	974	516	Not given	Questionnaire	Snoring for +4 nights/week	28	10.5
Valery et al (2004)²⁷	Australia	1,650	Not given	8.5	ISAAC questions	Snoring	15.6	14.2
Sulit et al (2005)²⁵	USA	788	393	9.5	History or spirometry	Portable polygraphy AHI >5	13.3	20.1
Desager et al (2005)¹⁶	Belgium	1,234	Not given	9.6	ISAAC questions, spirometry	Snoring	8.8	28
Verhulst et al (2007)²⁸	Sri Lanka	652	432	8.4	ISAAC questions	Snoring	14	32.6
Ramagopal et al (2008)²⁴	USA	236	147	7.2	History	PSG AHI >2	31.4	41.1
Ramagopal et al (2009)³⁴	USA	50	32	9.3	ISAAC questions + spirometry	PSG AHI >2	44	100
Kaditis et al (2010)¹⁰	Greece	442	241	7.6	History	Habitual snoring	47.5	28.5
Bhattacharjee et al (2010)⁹	USA	578	355	6.9	History	PSG	29.6	100
Ross et al (2012)³⁵	USA	108	73	9.1	History	Snoring for + 3 nights/week + ≥3 desaturations >3%/hour	100	29.6
Greenfeld et al (2013)³⁰	Israel	2,178	1,415	4.9	History	PSG OAHI >1	18	100
Gutierrez et al (2013)³¹	USA	141	85	6.1	History	PSG OAHI >1.5	43.9	100
Goldstein et al (2015)²⁹	USA	529	298	5.8	Previous diagnosis	PSQ >0.33	50	18.2
Teng et al (2014)³⁷	Taiwan	102	56	9.4	History + methacholine test	PSG AHI >5	50	50
Li et al (2015)³²	People’s Republic of China	22,478	10,227	9	History	CSHQ	3.5	12
Mean prevalence							33.2	41.8

Abbreviations: SDB, sleep-disordered breathing; ISAAC, International Study on Asthma and Allergies in Childhood; AHI, apnea–hypopnea index; PSG, polysomnography; OAHI, obstructive apnea–hypopnea index; PSQ, Pediatric Sleep Questionnaire; CSHQ, Children’s Sleep Habits Questionnaire.