Cohort Profile: The Dongfeng–Tongji cohort study of retired workers

Wang, Feng; Zhu, Jiang; Yao, Ping; Li, Xiulou; He, Meian; Liu, Yuewei; Yuan, Jing; Chen, Weihong; Zhou, Li; Min, Xinwen; Fang, Weili; Liang, Yuan; Wang, Youjie; Wei, Sheng; Liu, Jichun; Miao, Xiaoping; Lang, Mingjian; Jiang, Xixiang; Zhang, Peng; Li, Dongfeng; Lü, Chao; Wang, Xiaozheng; Wen-hu, Shi; Zheng, Jiajia; Guo, Huan; Zhang, Xiaomin; Yang, Handong; Hu, Frank B.; Wu, Tangchun

doi:10.1093/ije/dys053

Cited by 240 publications

(161 citation statements)

References 21 publications

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“…The details of the DFTJ cohort have been described previously. 15 Briefly, the primary aim of the DFTJ cohort was to investigate a wide range of lifestyle, dietary, psychosocial, occupational, environmental, and biochemical factors in relation to the development of chronic diseases. The Retirement Office and the Social Insurance Center at DMC provided a list of the retired workers and invited them to participate in this study.…”

Section: Study Populationmentioning

confidence: 99%

Sleep Duration and Midday Napping with 5-Year Incidence and Reversion of Metabolic Syndrome in Middle-Aged and Older Chinese

Yang

et al. 2016

Sleep

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Study Objectives: Prospective evidence on the association of sleep duration and midday napping with metabolic syndrome (MetS) is limited. We aimed to examine the associations of sleep duration and midday napping with risk of incidence and reversion of MetS and its components among a middle-aged and older Chinese population. Methods: We included 14,399 subjects from the Dongfeng-Tongji (DFTJ) Cohort Study (2008)(2009)(2010)(2011)(2012)(2013) who were free of coronary heart disease, stroke, and cancer at baseline. Baseline data were obtained by questionnaires and health examinations. Odds ratios (ORs) and 95% confidence interval (CI) were derived from multivariate logistic regression models. Results: After controlling for potential covariates, longer sleep duration ( ≥ 9 h) was associated with a higher risk of MetS incidence (OR, 1.29; 95% CI, 1.08-1.55) and lower reversion of MetS (OR, 0.80; 95% CI, 0.66-0.96) compared with sleep duration of 7 to < 8 h; whereas shorter sleep duration (< 6 h) was not related to incidence or reversion of MetS. For midday napping, subjects with longer napping (≥ 90 min) was also associated with a higher risk of MetS incidence and a lower risk of MetS reversion compared with those with napping of 1 to < 30 min (OR, 1.48; 95% CI, 1.05-2.10 and OR, 0.70; 95% CI, 0.52-0.94, respectively). Significance for incidence or reversion of certain MetS components remained in shorter and longer sleepers but disappeared across napping categories. Conclusions: Both longer sleep duration and longer midday napping were potential risk factors for MetS incidence, and concurrently exert adverse effects on MetS reversion.

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Section: Study Populationmentioning

confidence: 99%

Sleep Duration and Midday Napping with 5-Year Incidence and Reversion of Metabolic Syndrome in Middle-Aged and Older Chinese

Yang

et al. 2016

Sleep

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“…The design and study methods of DFTJ cohort have been described in detail previously (22). Briefly, 87% (27,009 out of 31,000) of retired employees at Dongfeng Motor Corporation with average age 63.6 years were recruited and agreed to complete a standard questionnaire, take part in physical examination and provide blood samples at study inception.…”

Section: Study Populationmentioning

confidence: 99%

Nighttime sleep duration and risk of nonalcoholic fatty liver disease: the Dongfeng-Tongji prospective study

et al. 2016

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Long nighttime sleep duration was associated with a modestly increased risk of NAFLD in a middle-aged and elderly Chinese population. Key messages Long nighttime sleep duration was associated with a modestly increased risk of NAFLD in a middle-aged and elderly Chinese population. The effect of long nighttime sleep on the risk of incident NAFLD was attenuated greatly by body mass index (BMI) in men.

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“…18 DMC was founded in 1969 and is one of the three largest auto manufacturers in China. The rationale, design, and methods of the DFTJ cohort have previously been described in detail.…”

Section: Study Participantsmentioning

confidence: 99%

“…The rationale, design, and methods of the DFTJ cohort have previously been described in detail. 18 Between 2008 and 2010, 27,009 (87%) of the invited 31,000 retired employees responded to the study and completed baseline questionnaires and medical examinations and provided blood samples. This study was approved by the Medical Ethics Committee of the School of Public Health, Tongji Medical College, Huazhong University of Science and Technology and Dongfeng General Hospital, DMC.…”

Section: Study Participantsmentioning

confidence: 99%