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Publications (4)6.11 Total impact

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    ABSTRACT: The role of magnesium in anemia remains unclear. We aimed to investigate the prevalence of anemia and its association with serum magnesium in a nationally representative sample. A total of 8,511 participants aged 18 years and over were recruited in this cross-sectional survey in 2009. Anemia was defined as hemoglobin concentration less than 130 g/l for men and less than 120 g/l for women. Multiple logistic regression models were applied to explore the association of magnesium and anemia. The prevalence of anemia in total was 14.0 % with 8.8 % for men and 18.5 % for women (P < 0.0001), respectively. The interaction terms between magnesium and gender and ferritin were significant (P < 0.001). In men with serum ferritin ≥15 ng/ml, compared with the first quartile of magnesium, the odds ratios (ORs) and 95 % confidence intervals (CIs) for those in the second, third, and fourth quartile of magnesium were 0.65 (0.46, 0.91), 0.77 (0.55, 1.09), and 0.63 (0.45, 0.89), respectively, after adjusting multiple confounders. Likewise, in women with serum ferritin ≥15 ng/ml, the corresponding ORs (95 % CIs) were 0.71 (0.56, 0.91), 0.64 (0.49, 0.84), and 0.53 (0.40, 0.71). The associations between magnesium and anemia were not significant in neither men nor women with serum ferritin <15 ng/ml. Serum magnesium was inversely associated with anemia in both men and women, in particular among adults with high serum ferritin levels.
    Biological trace element research 05/2014; · 1.92 Impact Factor
  • Yiqiang Zhan, Ruoqing Chen, Jinming Yu
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    ABSTRACT: Objective To examine the associations between sleep duration and total cholesterol (TC), triglyceride (TG), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), apolipoprotein B (ApoB), apolipoprotein A1 (ApoA1), and lipoprotein (a) [Lp(a)]. Methods The present study analyzed 8574 adults from the China Health and Nutrition Survey (2009). Sleep duration was classified into ⩽6, 7, 8, 9, and ⩾10 h. Age, education, occupation, current smoking, current drinking, physical activity, body mass index, hypertension, and diabetes were adjusted as confounders in gender-stratified multiple logistic regression models. Results Compared with women reporting 8 h sleep duration, the odds ratios (ORs) and 95% confidence intervals (CIs) of high TC for those with ⩽6, 7, 9, and ⩾10 h were 1.65 (1.32–2.06), 1.19 (1.00–1.43), 1.11 (0.89–1.39), and 1.27 (1.02–1.60) after adjusting for confounders. Likewise, the ORs (95% CIs) of high LDL-C were 1.71 (1.28–2.29), 1.36 (1.05–1.76), 1.04 (0.74–1.46), and 1.09 (0.78–1.53), whereas those of high ApoB were 1.80 (1.34–2.42), 1.15 (0.88–1.52), 0.95 (0.66–1.35), and 1.00 (0.70–1.43) for women with ⩽6, 7, 9, and ⩾10 h sleep duration, respectively. These associations were not statistically significant in men. Conclusions Both shorter and longer sleep durations were associated with higher risks of abnormal serum lipid profiles in women but not in men.
    Sleep Medicine. 01/2014;
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    ABSTRACT: BACKGROUND: Individual socioeconomic status (SES) has been found to be associated with cardiovascular diseases in developed countries, but the association between individual SES and metabolic syndrome (MetS) is still unclear in China. The objective of this study was to investigate the association between individual SES and MetS in China. METHODS: A cross-sectional study of 10054 community residents was performed from May to August 2007 using multistage stratified random sampling. SES was assessed in terms of education, personal monthly income, and household monthly income. The association between SES and MetS was determined by logistic regression models. RESULTS: After the adjustments regarding age, marital status, smoking, drinking, physical activity, body mass index (BMI), and community type, odds ratios (ORs) for MetS of individuals with education level of 7~12 years and >12 years were 0.87 (95% confidence interval [CI]: 0.75 to 0.99) and 0.83 (95% CI: 0.62 to 0.91) respectively compared with those with education level of <7 years in women. Following the adjustments as above, ORs for MetS of individuals with household monthly income level of middle and higher were 0.94 (95% CI: 0.86 to 0.97), and 0.72 (95% CI: 0.65 to 0.88) respectively compared with those with lower household monthly income level in women. The association between SES and MetS was not significant in men. CONCLUSIONS: Gender had an influence on the association between individual SES and MetS. Lower education and household monthly income level were associated with higher risk of MetS among community residents in women, while such association was not significant in men.
    BMC Public Health 10/2012; 12(1):921. · 2.08 Impact Factor
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    ABSTRACT: Background: We investigated the prevalence of low ankle brachial index (ABI) and the association of low ABI with pulse pressure among elderly community residents in China.Methods: This population-based cross-sectional study was conducted in Beijing and recruited 2982 participants who were aged 60 years or older in 2007. Low ABI was defined as an ABI value less than 0.9 in either leg. Participants with or without stroke or coronary heart disease (CHD) were analyzed separately. The association between pulse pressure and low ABI was examined by using multiple logistic regression models.Results: The prevalence of low ABI was 5.65% (4.24% among men and 6.52% among women; P = 0.0221) among participants without stroke or CHD and 10.91% (13.07% among men and 9.49% among women; P = 0.1328) among those with stroke or CHD. After adjusting for confounders, the odds ratio (95% CI) for each 5-mm Hg increase in pulse pressure was 1.19 (1.07, 1.33) and 1.10 (1.02, 1.20) for men and women, respectively, among participants without stroke or CHD and 1.17 (1.03, 1.34) and 1.15 (1.02, 1.30) for men and women with stroke or CHD. When pulse pressure was classified into quartiles and the lowest quartile was used as reference, the association between pulse pressure and low ABI remained positive in men and women.Conclusions: Low ABI was prevalent among elderly Chinese, and pulse pressure was positively associated with low ABI.
    Journal of Epidemiology 07/2012; 22(5):454-61. · 2.11 Impact Factor