Association between tea drinking and plasma folate concentration among women aged 18–30 years in China

Abstract Objective: Association was found between tea and neural tube defects. However, few studies investigated the relationship between tea consumption and blood folate levels. We aimed to investigate the association between tea consumption and plasma folate concentrations among women aged 18–30 years in different ethnicities of China. Design: Data were obtained from a national cross-sectional study conducted from 2005 to 2006 of women aged 18–30 years in China. Socio-demographic characteristics and lifestyle were obtained from a questionnaire. Dietary folate intake was determined by 24-h dietary recall. Plasma folate concentrations were measured by a microbiological assay. Multiple linear regression model was used to calculate partial regression coefficients after adjusting for confounding factors. Setting: Nine provinces or autonomous regions in China. Participants: A total of 2932 women aged 18–30 years in China. Results: After stratifying by ethnicity and tea type, tea consumption was significantly positively associated with plasma folate levels in Han women who drank unfermented tea weekly (β = 0·067, and P = 0·037) or daily (β = 0·119, and P = 0·031) and in Uighur women who drank fermented tea weekly (β = 0·325, and P = 0·028). For women who drank unfermented tea in Han ethnicity, weekly and daily tea drinkers had 6·77 % (95 % CI: 6·36 %, 7·21 %) and 7·13 % (95 % CI: 6·40 %, 7·96 %) increase in plasma folate concentration compared with no tea drinkers. Conclusions: There is a suggestion of possible positive association between unfermented tea drinking in Han ethnicity and plasma folate concentrations, for Chinese women aged 18–30 years. The relationship between tea drinking in other ethnic groups and plasma folate still needs to be further explored.

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Folate Nutritional Status among Psoriasis Patients not Exposed to Antifolate Drug

Current Nutrition & Food Science ◽

10.2174/1573401314666180702100301 ◽

2020 ◽

Vol 16 (4) ◽

pp. 543-553

Author(s):

Luciana Y. Tomita ◽

Andréia C. da Costa ◽

Solange Andreoni ◽

Luiza K.M. Oyafuso ◽

Vânia D’Almeida ◽

...

Keyword(s):

Folic Acid ◽

Linear Regression ◽

Multiple Linear Regression Model ◽

Folate Intake ◽

Serum Folate ◽

Linear Regression Models ◽

Cross Sectional ◽

Folic Acid Fortification ◽

Plasma Folate ◽

Psoriasis Severity

Background: Folic acid fortification program has been established to prevent tube defects. However, concern has been raised among patients using anti-folate drug, i.e. psoriatic patients, a common, chronic, autoimmune inflammatory skin disease associated with obesity and smoking. Objective: To investigate dietary and circulating folate, vitamin B12 (B12) and homocysteine (hcy) in psoriatic subjects exposed to the national mandatory folic acid fortification program. Methods: Cross-sectional study using the Food Frequency Questionnaire, plasma folate, B12, hcy and psoriasis severity using the Psoriasis Area and Severity Index score. Median, interquartile ranges (IQRs) and linear regression models were conducted to investigate factors associated with plasma folate, B12 and hcy. Results: 82 (73%) mild psoriasis, 18 (16%) moderate and 12 (11%) severe psoriasis. 58% female, 61% non-white, 31% former smokers, and 20% current smokers. Median (IQRs) were 51 (40, 60) years. Only 32% reached the Estimated Average Requirement of folate intake. Folate and B12 deficiencies were observed in 9% and 6% of the blood sample respectively, but hyperhomocysteinaemia in 21%. Severity of psoriasis was negatively correlated with folate and B12 concentrations. In a multiple linear regression model, folate intake contributed positively to 14% of serum folate, and negative predictors were psoriasis severity, smoking habits and saturated fatty acid explaining 29% of circulating folate. Conclusion: Only one third reached dietary intake of folate, but deficiencies of folate and B12 were low. Psoriasis severity was negatively correlated with circulating folate and B12. Stopping smoking and a folate rich diet may be important targets for managing psoriasis.

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A cross-sectional study on the tea consumption effects of ankle–brachial index

Vascular ◽

10.1177/17085381211064745 ◽

2021 ◽

pp. 170853812110647

Author(s):

Lishuang Gu ◽

Xuemei Liu ◽

Shouling Wu ◽

Kaiyun Chu ◽

Jing-jing Bao

Keyword(s):

Blood Pressure ◽

Linear Regression Analysis ◽

Ankle Brachial Index ◽

Density Lipoprotein ◽

Health Examination ◽

Multivariate Linear Regression Analysis ◽

Tea Consumption ◽

Cross Sectional ◽

Tea Drinking ◽

The Relationship

Objectives This thesis aims to explore the relationship between tea consumption and ankle–brachial index (ABI) and further studies the relationship between tea consumption and lower extremity atherosclerosis. Methods This is a cross-sectional, epidemiological survey of 17,373 subjects selected from the staff of Kailuan Group who had come to Kailuan General Hospital for a health examination from January 2016 to December 2017. Tea consumption was obtained by questionnaires. ABI was measured using an automated analyzer. The other data, such as age, gender, body mass index (BMI), and so on, was collected on the same day of the health examination results. The relationship between tea drinking habits and ABI was studied using logistic regression and multivariate linear regression analysis. Results Among the 17,373 analyzed subjects, the difference in age, gender, BMI, heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), uric acid (UA), C-reactive protein (CRP), fasting blood-glucose (Fbg), and ABI was statistically significant in the tea-drinking group and the nontea-drinking group ( p < 0.05). Multiple logistic regression models revealed that tea consumption was a positive predictor for ABI (odds ratio (OR) = 0.782, confidence interval (CI), 0.615–0.994) ( p < 0.05). Multivariate linear regression analysis of the ABI value showed that frequent tea-drinking has a positive correlation with the ABI value ( p < 0.05). Conclusions The higher tea consumption is significantly associated with higher ABI which means less risk for lower extremity atherosclerosis.

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Product Brand Loyalty and Purchase Decision

International Journal of Entrepreneurial Research ◽

10.31580/ijer.v3i3.1504 ◽

2020 ◽

Vol 3 (3) ◽

pp. 76-87

Author(s):

Muhammad Naeem ◽

Abdul Sami

Keyword(s):

Brand Loyalty ◽

Quantitative Research ◽

Research Study ◽

Positive Association ◽

Perceived Quality ◽

Purchase Decision ◽

Cross Sectional ◽

Business World ◽

Multiple Variables ◽

The Relationship

The present study was an examination of the relationship between product brand loyalty and purchase decision of automotive customers. The study focused on comparative analysis of two famous brands of automobile i-e Honda City and Toyota Corolla Xli and the various effects of product brand loyalty on purchase decision of automotive customers. A cross sectional quantitative research design was employed in the research study. In today’s competitive business world, now most of the marketers and manufacturers of various brands have encountered with multiple variables through which they can not only influence the purchase decision of their customers but also secure their buying preferences. The variables that are used and relevant to this study are product brand loyalty, perceived quality, price, and purchase decision. During examination of the relationship between these variables, study investigated that there is a positive association between product brand loyalty, product perceived quality, price and purchase decision.

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The Relationships Between Serum DHEA-S and AMH Levels in Infertile Women: A Retrospective Cross-Sectional Study

Journal of Clinical Medicine ◽

10.3390/jcm10061211 ◽

2021 ◽

Vol 10 (6) ◽

pp. 1211

Author(s):

Li-Te Lin ◽

Kuan-Hao Tsui

Keyword(s):

Generalized Linear Models ◽

Large Scale ◽

Linear Models ◽

Positive Association ◽

Cross Sectional Study ◽

Dehydroepiandrosterone Sulphate ◽

Sectional Study ◽

Cross Sectional ◽

Infertile Women ◽

The Relationship

The relationship between serum dehydroepiandrosterone sulphate (DHEA-S) and anti-Mullerian hormone (AMH) levels has not been fully established. Therefore, we performed a large-scale cross-sectional study to investigate the association between serum DHEA-S and AMH levels. The study included a total of 2155 infertile women aged 20 to 46 years who were divided into four quartile groups (Q1 to Q4) based on serum DHEA-S levels. We found that there was a weak positive association between serum DHEA-S and AMH levels in infertile women (r = 0.190, p < 0.001). After adjusting for potential confounders, serum DHEA-S levels positively correlated with serum AMH levels in infertile women (β = 0.103, p < 0.001). Infertile women in the highest DHEA-S quartile category (Q4) showed significantly higher serum AMH levels (p < 0.001) compared with women in the lowest DHEA-S quartile category (Q1). The serum AMH levels significantly increased across increasing DHEA-S quartile categories in infertile women (p = 0.014) using generalized linear models after adjustment for potential confounders. Our data show that serum DHEA-S levels are positively associated with serum AMH levels.

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Psychological Capital and Family Satisfaction among Employees: Do Occupational Stressors Moderate the Relationship?

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph182212260 ◽

2021 ◽

Vol 18 (22) ◽

pp. 12260

Author(s):

Oi-Ling Siu ◽

Qianting Kong ◽

Ting-Kin Ng

Keyword(s):

Structural Equation ◽

Online Survey ◽

Psychological Capital ◽

Positive Association ◽

Family Satisfaction ◽

Equation Modeling ◽

Occupational Stressors ◽

Cross Sectional ◽

Personal Resource ◽

The Relationship

The COVID-19 pandemic has created more occupational stressors, particularly work–family interface issues. The purpose of this study was to investigate the moderating role of occupational stressors in the relationship between a personal resource (psychological capital) and family satisfaction. A cross-sectional study was carried out with a sample of 787 employees (367 males, 420 females) from the Greater Bay Area of China between October and November 2020. Participants completed an online survey which included the Chinese version of the Psychological Capital Questionnaire, measures of occupational stressors from the Work Stress Management DIY Kit and a measure of family satisfaction. Latent moderated structural equation modeling revealed that family satisfaction was positively associated with psychological capital and negatively associated with occupational stressors. Furthermore, occupational stressors weakened the positive association between psychological capital and family satisfaction. These findings provided empirical evidence for the work–home resources model and may suggest that it would be beneficial to boost psychological capital and reduce occupational stressors of employees.

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Exploring the relationship of human–nature interaction and mindfulness: a cross-sectional study

10.31231/osf.io/9dx72 ◽

2021 ◽

Author(s):

Pooja Sahni ◽

Jyoti Kumar

Keyword(s):

Mental Health Problems ◽

Positive Association ◽

Cross Sectional Study ◽

Sectional Study ◽

Significant Positive Association ◽

Cross Sectional ◽

Nature Relatedness ◽

Relationship Of ◽

The Relationship ◽

Nature Experience

History is replete with examples where humans have sought refuge in nature for psychological restoration. In this cross-sectional study we explore the relationship of nature experience and mindfulness. Nature experience is assessed through “nature in the neighbourhood”, “frequency of visit” to nature-rich spaces, as well as one's inherent connection with nature described as “nature relatedness”. The study sample consisted of 334 Indian adults. The findings from this study show that frequency of visit to nature-rich spaces has a significant positive association with mindfulness. The hierarchical regression analysis suggests an interaction effect of “nature relatedness” in the association of the presence of nature rich spaces in the neighbourhood, frequency of visit as well as mindfulness. Interestingly, when childhood experiences were explored they had a significant association with “nature relatedness” and mindfulness. The evidence from this research suggests that nature experience may find its application as one of the mindfulness techniques prescribed for self-management of mental health problems.

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Abstract P334: The Relationship Between Urinary Sodium-to-Potassium Ratio And High Blood Pressure: TMM CommCohort Study

Circulation ◽

10.1161/circ.141.suppl_1.p334 ◽

2020 ◽

Vol 141 (Suppl_1) ◽

Author(s):

Mana Kogure ◽

Tomohiro Nakamura ◽

Naho Tsuchiya ◽

Takumi Hirata ◽

Akira Narita ◽

...

Keyword(s):

Blood Pressure ◽

Alcohol Intake ◽

Positive Association ◽

Cross Sectional Study ◽

Analysis Of Covariance ◽

Cross Sectional ◽

High K ◽

Prevention Of Hypertension ◽

The Relationship ◽

Low K

Introduction: Recently, the balance between sodium and potassium intake, i.e. sodium-to-potassium (Na/K) ratio, has received significant attention for prevention of hypertension. Previous studies reported the positive association between urinary Na/K (uNa/K) ratio and hypertension. However, even the same uNa/K ratio value, there might be high Na/ high K ratio or low Na/ low K ratio. Hypothesis: We assessed the hypothesis that blood pressure (BP) is higher in high Na/ high K group than that in low Na/ low K group even at the same uNa/K ratio in general population in cross-sectional study. Methods: The subjects were 20 to 74 years old who participated in The Tohoku Medical Megabank Project Community-based Cohort Study. Of these participants, we targeted 54,011 subjects (men: 20,505 women: 33,506 mean age: 59.9 years) who had information of BP, urinary Na and K. We estimated 24-h urinary excretion of Na and K using Tanaka formula. Urinary Na and K were each classified into quartiles (Na; Q1~Q4, K; Q1~Q4), and set all 16 groups of uNa/K ratio by combining Na and K respectively. To assess the relationship between casual uNa/K ratio and BP, we performed an analysis of covariance to calculate the adjusted mean systolic BP (SBP). We included covariate factors as age, sex, BMI and alcohol intake. We also assessed the relationship between uNa/K ratio and SBP using multiple regression analyses adjusted for covariate factors. We stratified the participants into two groups: ‘under treatment for hypertension’ (n=17,091) and ‘without treatment for hypertension (n=36,920)’. Results: The mean of uNa/K ratio for each group of Na (Q1)/K(Q1), Na (Q2)/K(Q2), Na (Q3)/K(Q3) and Na (Q4)/K(Q4) was all 4.0. As previous report showed, higher uNa/K ratio group showed higher SBP and lower uNa/K group showed lower BP. When we compared adjusted mean SBP of Na (Q1)/K(Q1) and Na (Q4)/K(Q4) the value were comparable, but the value were significantly higher in Na (Q4)/K(Q4) group (The adjusted mean SBP of Na (Q1)/K(Q1), Na (Q2)/K(Q2), Na (Q3)/K(Q3) and Na (Q4)/K(Q4) was 123.6, 124.9, 124.7 and 125.5 mmHg, respectively). The uNa/K was significantly positively associated with SBP independently of age, sex, BMI, and alcohol intake. The finding was unchanged the results in under treatment group. Conclusions: BP was significantly higher in high Na/ high K group than in low Na/ low K group even at the same uNa/K ratio. We suggested that not only increasing K intake but also reducing salt is important for preventing hypertension.

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Trends and influencing factors of plasma folate levels in Chinese women at mid-pregnancy, late pregnancy and lactation periods

British Journal Of Nutrition ◽

10.1017/s0007114520004821 ◽

2020 ◽

pp. 1-7

Author(s):

Yu-Bo Zhou ◽

Ke-Yi Si ◽

Hong-Tian Li ◽

Xiu-Cui Li ◽

Ying Meng ◽

...

Keyword(s):

Late Pregnancy ◽

Geographic Region ◽

Northern Region ◽

Cross Sectional ◽

Lactating Women ◽

Folate Concentration ◽

Folate Status ◽

Plasma Folate ◽

South Central ◽

Pregnancy And Lactation

Abstract Folate status for women during early pregnancy has been investigated, but data for women during mid-pregnancy, late pregnancy or lactation are sparse or lacking. Between May and July 2014, we conducted a cross-sectional study in 1211 pregnant and lactating women from three representative regions in China. Approximately 135 women were enrolled in each stratum by physiological periods (mid-pregnancy, late pregnancy or lactation) and regions (south, central or north). Plasma folate concentrations were measured by microbiological assay. The adjusted medians of folate concentration decreased from 28·8 (interquartile range (IQR) 19·9, 38·2) nmol/l in mid-pregnancy to 18·6 (IQR 13·2, 26·4) nmol/l in late pregnancy, and to 17·0 (IQR 12·3, 22·5) nmol/l in lactation (Pfor trend < 0·001). Overall, lower folate concentrations were more likely to be observed in women residing in the northern region, with younger age, higher pre-pregnancy BMI, lower education or multiparity, and in lactating women who had undergone a Caesarean delivery or who were breastfeeding exclusively. In total, 380 (31·4 %) women had a suboptimal folate status (folate concentration <13·5 nmol/l). Women in late pregnancy and lactating, residing in the northern region, having multiparity and low education level had a higher risk of suboptimal folate status, while those with older age had a lower risk. In conclusion, maternal plasma folate concentrations decreased as pregnancy progressed, and were influenced by geographic region and maternal socio-demographic characteristics. Future studies are warranted to assess the necessity of folic acid supplementation during later pregnancy and lactation especially for women at a higher risk of folate depletion.

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Daily tea drinking is not associated with newly diagnosed non-alcoholic fatty liver disease in Chinese adults: the Tianjin chronic low-grade systemic inflammation and health cohort study

Nutrition Journal ◽

10.1186/s12937-019-0502-y ◽

2019 ◽

Vol 18 (1) ◽

Cited By ~ 1

Author(s):

Yang Xia ◽

Xuena Wang ◽

Shunmin Zhang ◽

Qing Zhang ◽

Li Liu ◽

...

Keyword(s):

Black Tea ◽

Cross Sectional Study ◽

Low Grade ◽

Tea Consumption ◽

Newly Diagnosed ◽

Chinese Adults ◽

Cross Sectional ◽

Alcoholic Fatty Liver ◽

Tea Drinking ◽

Health Cohort Study

Abstract Background Previous studies have reported that tea extract supplementation has potential benefits on the risk factors of non-alcoholic fatty liver disease (NAFLD); however, no study has investigated the direct effect of daily tea consumption on the prevalence of NAFLD in the general population. This cross-sectional study aimed to evaluate the associations between tea consumption and the prevalence of newly diagnosed NAFLD among Chinese adults. Methods The present cross-sectional study was based on the Tianjin Chronic Low-grade Systemic Inflammation and Health Cohort Study. In total, 19,350 participants were enrolled in the analyses. Tea consumption was assessed via a self-administered food frequency questionnaire. NAFLD was diagnosed via liver ultrasonography and no history of heavy alcohol intake. Logistic regression analysis was used to estimate the associations between tea consumption and the prevalence of NAFLD. Results Consumption of green tea, oolong tea, and black tea were positively associated with the prevalence of newly diagnosed NAFLD before adjustments. Compared with the participants who never drink tea, the odds ratios (95% confidence interval) of newly diagnosed NAFLD in the highest categories (≥ 1 cup/day) of green tea, oolong tea, black tea, and jasmine tea were 1.48 (1.33, 1.65), 1.50 (1.33, 1.68), and 1.28 (1.13, 1.46), and 1.36 (1.20, 1.54) before adjustments, respectively. However, no significant association was found between tea consumption and the prevalence of NAFLD after adjusting for socio-demographic, behavioural, anthropometric, dietary, and clinical confounding factors. Conclusion There is no significant association between daily tea drinking and newly-diagnosed NAFLD in general Chinese adults.

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A link between knowledge sharing and managers’ characteristics

Leadership & Organization Development Journal ◽

10.1108/lodj-06-2018-0236 ◽

2018 ◽

Vol 39 (8) ◽

pp. 1024-1036 ◽

Cited By ~ 3

Author(s):

Jana Matošková ◽

Lucie Macurová ◽

Lucie Tomancová

Keyword(s):

Knowledge Sharing ◽

Leadership Style ◽

Principal Axis ◽

Empirical Work ◽

Positive Association ◽

Significant Positive Association ◽

Cross Sectional ◽

Content Type ◽

The Relationship ◽

Principal Axis Factor

Purpose The purpose of this paper is to examine whether and to what extent knowledge-oriented leadership (KOL) is associated with knowledge sharing (KS) in an organization as well as the dimensions of this leadership style. Design/methodology/approach Opinion-based questionnaires were applied in the study. A principal axis factor analysis was conducted to find the main factors in KOL (n=236). The relationship between KS and KOL was tested with Pearson’s correlation coefficient method. Findings The findings support the importance of high-quality leader–member exchange for KS because KOL had a strong significant positive association with the extent of KS in the organization (n=96, r=0.521). The principal axis factor suggested three factors, all of which were moderately significantly related to KS: the perceived support from the superior, enough time for KS and information flow from the superior. Research limitations/implications The research design in this study was cross-sectional. Thus, the interpretations of the cause–effect relationship among the variables could not be determined. Furthermore, the findings should be confirmed using a larger sample. Practical implications The study indicates that if innovativeness and the use of human capital are important for an organization’s competitive ability, it is vital to train managers to be able to apply KOL. Originality/value Few studies have addressed the relationship between leadership and KS. Hence, this study contributes to a better understanding of the relation between KS and KOL style. Additionally, KOL is probably a multidimensional construct, but little empirical work has been done to explore it.

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