Association of daytime napping with prediabetes and diabetes in a Chinese population: Results from the baseline survey of the China Health and Retirement Longitudinal Study.
BACKGROUND
Only a few studies have investigated the effects of daytime napping on diabetes, and these studies have reported conflicting results. The aim of the present study was to examine whether daytime napping is associated with a higher risk of prediabetes and diabetes.


METHODS
The present cross-sectional study of napping duration in relation to prediabetes and diabetes was conducted in 12 277 participants. Data from the first wave (2011) of the China Health and Retirement Longitudinal Study were used. Daytime napping was divided into four groups: no napping (reference) and napping for 1-30, 31-90, and >90 min. Multinomial logistic regression was used to obtain odds ratios (ORs) and 95% confidence intervals (CIs).


RESULTS
Individuals who reported taking daily afternoon naps accounted for 53.39% of all participants. Nappers had a higher prevalence of prediabetes and diabetes than non-nappers. Compared with the reference group, the weighted fully adjusted ORs (95% CI) were 1.36 (1.10-1.68) and 1.61 (1.22-2.13) for napping >90 min in prediabetic and diabetic patients, respectively.


CONCLUSIONS
Long daytime napping duration was positively associated with prediabetes and diabetes. Further physiological and cohort studies are needed to confirm these results and elucidate potential mechanisms.
['Yin|Xin|X|', 'Liu|Qi|Q|', 'Wei|Jiate|J|', 'Meng|Xin|X|', 'Jia|Chongqi|C|']
D000368:Aged D044466:Asians D002681:China D003430:Cross-Sectional Studies D003924:Diabetes Mellitus, Type 2 D005260:Female D006801:Humans D016015:Logistic Models D008137:Longitudinal Studies D008297:Male D008875:Middle Aged D011236:Prediabetic State D015995:Prevalence D012890:Sleep D011795:Surveys and Questionnaires D013997:Time Factors
prediabetes diabetes China nap duration 中国 前驱糖尿病 午睡时间 糖尿病