ABSTRACT
Objective@#To describe the characteristics of habitual snoring among adults from 10 regions engaged in the China Kadoorie Biobank (CKB) study.@*Methods@#The baseline survey of CKB was conducted from 2004 to 2008. Data was collected regarding the information on socio- demographic characteristics, lifestyle, sleeping habits, and results from the physical examination of the participants. Logistic regression models were used to compare the regional differences and to estimate the associations of other baseline characteristics on snoring habit.@*Results@#A total of 512 713 participants were included in this study. The overall prevalence of habitual snoring was 21.2%, higher among men, in south regions and urban areas, but no difference observed among people with different socioeconomic status after adjusting for age, regions, BMI, waist circumference or lifestyle factors. Results showed that the prevalence of habitual snoring under the multivariable adjusted model increased among current and ever smokers, also among current and ever alcohol consumers. The risk of habitual snoring was increased by 19% per 1 kg/m2 and 6% per 1 cm increment in BMI or waist circumference, respectively. Among participants with similar BMI, central obese individuals were more likely to be habitual snorers. For individuals with similar waist circumference, the prevalence of habitual snoring was higher among those with higher BMI.@*Conclusion@#The prevalence of habitual snoring varied across regions. Substantial differences in habitual snoring were also seen among people with different lifestyles and body sizes.
ABSTRACT
BACKGROUND: There has been little research done on the factors associated with snoring among adults in Korea. METHODS: Subjects for this cross-sectional study were 1940 adults aged 20 to 80 years who had visited the health promotion center at one university hospital in Chungcheongnam-do for general health check-ups. Standard interviews, anthropometrics, and biochemical studies were conducted. Habitual snoring was defined as snoring more than 4 days per week. Multiple logistic regression analysis was used to evaluate the associations between habitual snoring and age, sex, smoking, alcohol consumption, body mass index (BMI), waist circumference, hypertension, diabetes mellitus and dyslipidemia. RESULTS: The prevalence of habitual snoring was 13.9%. The proportion of problem drinkers, current smokers, BMI equal to or greater than 25 kg/m2, abdominal obesity, hypertension, diabetes mellitus, hypercholesterolemia, hypertriglyceridemia and low HDL-cholesterolemia increased significantly with increasing frequency in snoring (P<0.05). Multiple logistic regression analysis revealed that habitual snoring was independently associated with the 50-59 years age group, male, current smokers, abdominal obesity, hypertension and low HDL-cholesterolemia (P<0.05). CONCLUSIONS: These findings show that habitual snorers are at increased risk for individual risk factors associated with cardiovascular diseases. Prospective studies are needed to further examine the causal relationship between habitual snoring and cardiovascular diseases.