Document Detail


A quantile regression approach to re-investigate the relationship between sleep duration and body mass index in Taiwan.
MedLine Citation:
PMID:  21327855     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: Previous studies on the relationship between sleep duration and body mass index (BMI) have shown inconsistent results by using estimation strategies within the framework of ordinary least squares (OLS). This study examined the relationship between sleep duration and BMI by using quantile regression to account for the potential heterogeneous effect of sleep duration on BMI in different BMI categories. METHODS: The data of 2,392 adults were from the 2005 Panel Study of Family Dynamics in Taiwan. The dependent variable was BMI of the respondents. Both OLS and quantile regression models were used for comparison. RESULTS: The OLS model does not show significant relationship, while the quantile regression model shows a U-shaped relationship between sleep duration and BMI beyond the 90th percentile in men (BMI = 28.69) and an inverse U-shaped relationship at the 30th percentile of BMI in women (BMI = 21.37). CONCLUSIONS: Quantile regression can provide information that may be masked by OLS in analyzing the relationship between sleep duration and BMI. Sleep modification with the aim to obtain the optimal sleep duration may help to reduce BMI in obese men.
Authors:
Chiang-Ming Chen; Chen-Kang Chang; Chia-Yu Yeh
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-15
Journal Detail:
Title:  International journal of public health     Volume:  -     ISSN:  1661-8564     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101304551     Medline TA:  Int J Public Health     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Economics, National Chi Nan University, No.1, Daxue Rd, Puli Township, Nantou, Nantou County, 545, Taiwan.
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