Prevalence of snoring and witnessed apnea in Taiwanese adults.

BACKGROUND Sleep-disordered breathing (SDB) is a prevalent disorder that has a huge impact on the public. It has been proposed that Chinese populations have a higher incidence of SDB than Caucasians due to a narrow cranial base and flat mid-face structure. Few studies have investigated the prevalence of SDB in Taiwan. This study prospectively assesses the complaints of SDB and related conditions via telephone interviews with individual older than fifteen in Taiwan to calculate a possible prevalence. METHODS Computer-assisted telephone interviews were conducted from Oct. 25, 2006 to Nov. 6, 2006. Individuals aged over 15 years were interviewed. The number of successful interviews was calculated based on the population prior to the study. Demographic data and data for symptoms of SDB and medical conditions were obtained. RESULTS In total, 4,011 individuals, 1,634 males and 2,377 females, completed the interviews. The prevalence of snoring in these Taiwanese individuals was 51.9% [95% confidence interval (CI) 51.13%-52.67%], 60.8% (95% CI 58.67%-62.93%) in males and 42.5% (95% CI 40.26%-44.74%) in females. The prevalence of witnessed apnea during sleep was 2.6% (95% CI 2.1%-3.1%), 3.4% (95% CI 2.6%-4.2%) in males and 1.9% (95% CI 1.28%-2.52%) in females. The prevalence of snoring and witnessed apnea was significantly higher in males than in females (p < 0.05). Prevalence of hypertension, cardiovascular disease, diabetes mellitus, arthritis and backache was higher in those who snored or had witnessed apnea than those without these symptoms (p < 0.05). CONCLUSION This study determined that 51.9% (95% CI 51.13%-52.67%) of Taiwanese snore and 2.6% (95% CI 2.1%-3.1%) have witnessed apnea. Those who snore or have witnessed apnea have a higher incidence of comorbidity with major medical diseases compared to those who do not snore or do not have witnessed apnea.

[1]  A. Ogawa,et al.  The predictors of central and obstructive sleep apnoea in haemodialysis patients. , 2007, Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association.

[2]  P. Aljama,et al.  Sleep Disorders Are Underdiagnosed in Patients on Maintenance Hemodialysis , 2006, Nephron Clinical Practice.

[3]  Zhiqiang Wang,et al.  Prevalence of type 2 diabetes mellitus of Chinese populations in Mainland China, Hong Kong, and Taiwan. , 2006, Diabetes research and clinical practice.

[4]  M. Ekici,et al.  Association of asthma-related symptoms with snoring and apnea and effect on health-related quality of life. , 2005, Chest.

[5]  B. Lam,et al.  Craniofacial profile in Asian and white subjects with obstructive sleep apnoea , 2005, Thorax.

[6]  N. Collop.  Obstructive sleep apnea syndromes. , 2005, Seminars in respiratory and critical care medicine.

[7]  L. Parkinson,et al.  A comparison of four computer-based telephone interviewing methods: Getting answers to sensitive questions , 2002, Behavior research methods, instruments, & computers : a journal of the Psychonomic Society, Inc.

[8]  M. Kryger,et al.  Gender and obstructive sleep apnea syndrome, part 1: Clinical features. , 2002, Sleep.

[9]  J. Manson,et al.  Snoring as a risk factor for type II diabetes mellitus: a prospective study. , 2002, American journal of epidemiology.

[10]  W. Yeh,et al.  Prevalence, awareness, treatment and control of hypertension in Taiwan: results of Nutrition and Health Survey in Taiwan (NAHSIT) 1993–1996 , 2001, Journal of Human Hypertension.

[11]  H. Moldofsky,et al.  Sleep and pain. , 2001, Sleep medicine reviews.

[12]  T. Gislason,et al.  The role of habitual snoring and obesity in the development of diabetes: a 10‐year follow‐up study in a male population , 2000, Journal of internal medicine.

[13]  Bonnie K. Lind,et al.  Association of Sleep-Disordered Breathing, Sleep Apnea, and Hypertension in a Large Community-Based Study , 2000 .

[14]  C. D'Ambrosio,et al.  Sleep-related breathing disorders and cardiovascular disease. , 2000, The American journal of medicine.

[15]  Y. Hishikawa,et al.  Prevalence of sleep‐related respiratory disorders in 101 schizophrenic inpatients , 1998, Psychiatry and clinical neurosciences.

[16]  P. Enright,et al.  Prevalence and correlates of snoring and observed apneas in 5,201 older adults. , 1996, Sleep.

[17]  T. Gislason,et al.  Daytime sleepiness, snoring and gastro‐oesophageal reflux amongst young adults in three European countries , 1995, Journal of internal medicine.

[18]  C Guilleminault,et al.  A cause of excessive daytime sleepiness. The upper airway resistance syndrome. , 1993, Chest.

[19]  F. Cirignotta,et al.  Some epidemiological data on snoring and cardiocirculatory disturbances. , 1980, Sleep.

[20]  Shih-An Liu,et al.  Prevalence of snoring in Taichung area: an epidemiological study. , 2004, Journal of the Chinese Medical Association : JCMA.

[21]  S. Woolf,et al.  The association of hypertension and secondary cardiovascular disease with sleep-disordered breathing. , 2003, Chest.

[22]  Kow-Tong Chen,et al.  Prevalence of type 2 diabetes mellitus in Taiwan: ethnic variation and risk factors. , 2001, Diabetes research and clinical practice.

[23]  P. Kurjata,et al.  [Snoring and excessive daytime somnolence and risk of cardiovascular diseases]. , 2001, Polskie Archiwum Medycyny Wewnetrznej.