伊斯卡拓展了颇受市场欢迎的FFQ4-12铣刀系列,包括新刀体和刀片。FFQ4-12铣刀夹持带4个切削刃的单面刀片,切削力更低,可用于低功率机床及大悬伸加工应用。新的套式铣刀F F Q 4D…-12提供直径为40mm、50mm、52mm及66mm的疏齿型铣刀,拓展...伊斯卡拓展了颇受市场欢迎的FFQ4-12铣刀系列,包括新刀体和刀片。FFQ4-12铣刀夹持带4个切削刃的单面刀片,切削力更低,可用于低功率机床及大悬伸加工应用。新的套式铣刀F F Q 4D…-12提供直径为40mm、50mm、52mm及66mm的疏齿型铣刀,拓展该系列铣刀的粗铣加工应用至模具工业、航空工业以及通用机械加工领域。展开更多
Background and Objectives:Repeating food frequency questionnaires(FFQs)within the same population was reported to improve the validity of correlation coefficient(CC).However,the enhancement of validity in ranking agre...Background and Objectives:Repeating food frequency questionnaires(FFQs)within the same population was reported to improve the validity of correlation coefficient(CC).However,the enhancement of validity in ranking agreement remains underreported.Herein,we assessed the validity of energy and nutrient intake estimates using single and multiple FFQs and their ability to rank individuals.Methods and Study Design:213 men and women aged≥20 years were recruited from the residents participating in the Tohoku Medical Megabank Project(TMM)cohort studies;three FFQs were conducted in November each year from 2019 to 2021,with 12-day weighted food records(WFRs)as the reference method.Spearman’s rank CCs were calculated between single or multiple FFQs estimates and those obtained through the 12-day WFR.Additionally,the ranking agreement was compared based on cross-classification.Results:CCs between intake estimated using a single FFQ and 12-day WFR were moderate for several nutrients,with median CCs of 0.52 for men and 0.48 for women.CCs for multiple FFQs were slightly higher than that of single FFQ,with median CCs of 0.59 for men and 0.56 for women.Regardless of the number of FFQs,the proportion of subjects classified into the opposite extreme category was≤5%for most nutrients.Conclusions:A single FFQ used for adults in the TMM cohort studies showed moderate validity.Estimates from multiple FFQs improved the accuracy slightly;nevertheless,this indicates that relying on a single FFQ is unlikely to result in a serious misclassification compared to using intake data from multiple FFQs over a relatively short period.展开更多
Objectives This study was design to develop a semi-quantitative Chinese Food Frequency Questionnaire （FFQ） and to conduct a validation study for the questionnaire. Methods Based on the survey experience in recent ye...Objectives This study was design to develop a semi-quantitative Chinese Food Frequency Questionnaire （FFQ） and to conduct a validation study for the questionnaire. Methods Based on the survey experience in recent years, a new Chinese food frequency questionnaire （FFQ） with 149 items in 17 food categories was developed. A validation study on this new FFQ was conducted in Jiangsu and Beijing of China between 1999 and 2001. The period of study covered 1 year and the FFQ was validated by comparing with data obtained by a six repeated 24-hour recalls for 3 consecutive days, or a totally 18-day 24- hour recall throughout the year. A total of 271 healthy adult subjects were enrolled in the study. Food and nutrient intakes measured by the 18-day dietary recalls and food frequency questionnaires （FFQs） were computed in the National Institute for Nutrition and Food Safety, China CDC using the existing nutrition database. The average daily intake of foods and nutrients over the 18-day recall was used to compare with FFQ1 and FFQ2, which was conducted at the beginning and the end of the year, respectively. All statistical analyses were carried out using SAS software version 6.12.展开更多
The plasma homocysteine concentration is a good indicator of various diseases such as cardiovascular disease, stroke, and dementia. This study examined the relationship between plasma homocysteine concentrations and d...The plasma homocysteine concentration is a good indicator of various diseases such as cardiovascular disease, stroke, and dementia. This study examined the relationship between plasma homocysteine concentrations and dietary habits in a population of elderly Japanese people from the Amami Islands. Data from 1131 participants collected during a baseline survey for the Japan Multi-institutional Collaborative Cohort study, which is a prospective cohort study, were used. Information on dietary habits was collected using a food frequency questionnaire. The plasma homocysteine concentration was associated with age in women only. Smoking in men and menopause were significantly associated with homocysteine concentrations. Analysis of blood biochemical data showed that estimate of glomerular filtration rate negatively correlated with plasma homocysteine in women (R = ?0.91, p < 0.001) and men (R = ?0.49, p < 0.001). There was no common food associated with homocysteine concentrations among the groups, but in each group, some food types were associated with homocysteine concentrations. In men, Chinese tea was a common factor showing a negative correlation with homocysteine concentrations. Natto showed a negative correlation with homocysteine concentrations in non-smoking men (β = ?0.11, p < 0.05) and premenopausal women (β = ?0.20, p < 0.01). Eggs (β = ?0.21, p < 0.01) and food processed from fish eggs (β = ?0.21, p < 0.01) negatively correlated with homocysteine concentrations in smoking men. Miso soup (β = ?0.13, p < 0.01) and yoghurt (β = ?0.10, p < 0.05) negatively correlated with homocysteine concentrations in postmenopausal women. Consumption of folate-rich food did not necessarily correlate with a low plasma Hcy concentration.展开更多
文摘伊斯卡拓展了颇受市场欢迎的FFQ4-12铣刀系列,包括新刀体和刀片。FFQ4-12铣刀夹持带4个切削刃的单面刀片,切削力更低,可用于低功率机床及大悬伸加工应用。新的套式铣刀F F Q 4D…-12提供直径为40mm、50mm、52mm及66mm的疏齿型铣刀,拓展该系列铣刀的粗铣加工应用至模具工业、航空工业以及通用机械加工领域。
基金supported by grants from the Japan Agency for Medical Research and Development(AMED)(grant numbers,JP17km0105001 and JP21tm0124005)supported by KAGOME CO.,LTD.and KAGOME CO.,LTDsupport in the form of salaries for authors YY,TY,and SS.
文摘Background and Objectives:Repeating food frequency questionnaires(FFQs)within the same population was reported to improve the validity of correlation coefficient(CC).However,the enhancement of validity in ranking agreement remains underreported.Herein,we assessed the validity of energy and nutrient intake estimates using single and multiple FFQs and their ability to rank individuals.Methods and Study Design:213 men and women aged≥20 years were recruited from the residents participating in the Tohoku Medical Megabank Project(TMM)cohort studies;three FFQs were conducted in November each year from 2019 to 2021,with 12-day weighted food records(WFRs)as the reference method.Spearman’s rank CCs were calculated between single or multiple FFQs estimates and those obtained through the 12-day WFR.Additionally,the ranking agreement was compared based on cross-classification.Results:CCs between intake estimated using a single FFQ and 12-day WFR were moderate for several nutrients,with median CCs of 0.52 for men and 0.48 for women.CCs for multiple FFQs were slightly higher than that of single FFQ,with median CCs of 0.59 for men and 0.56 for women.Regardless of the number of FFQs,the proportion of subjects classified into the opposite extreme category was≤5%for most nutrients.Conclusions:A single FFQ used for adults in the TMM cohort studies showed moderate validity.Estimates from multiple FFQs improved the accuracy slightly;nevertheless,this indicates that relying on a single FFQ is unlikely to result in a serious misclassification compared to using intake data from multiple FFQs over a relatively short period.
文摘目的:对自行编制的食物频率问卷进行效度检验,探究其是否可用于孕期妇女的膳食调查及规模人群营养流行病学调查。方法:以在孕早期(10~13w^(+6) d)完成食物频率(FFQ)调查,并收集到3天24小时膳食回顾(3days 24HR)数据的111名孕妇作为调查对象。采用Wilcoxon配对秩和检验比较两种方法摄入量之间的差异;采用Spearman相关系数评估两种方法的一致性程度;采用Bland-Altman图用于比较两种方法所得平均总能量和宏量营养素摄入量的差异。结果:使用FFQ调查与3 days 24HR调查对热量、主食及蔬菜的摄入量估计无统计学差异。热量、三大宏量营养素的Spearman相关系数范围为0.249(脂肪)~0.529(蛋白质)。除主食、薯类、菌藻类及水果外,其他食物组的相关性均有统计学意义,Spearman相关系数范围为0.180(粗粮)~0.578(奶制品)。BlandAltman图显示,热量、蛋白质及脂肪的比值均在1附近。结论:本研究设计的较为短小的食物频率问卷的效度较好,可以用于孕期孕妇的膳食调查,也可用于开展大规模人群营养流行病学调查。
基金the funding from the National Institute for Cancer Research,NIH,USA,and the National Institute for Nutrition and Food Safety,Chinese Center for Disease Control and Prevention
文摘Objectives This study was design to develop a semi-quantitative Chinese Food Frequency Questionnaire （FFQ） and to conduct a validation study for the questionnaire. Methods Based on the survey experience in recent years, a new Chinese food frequency questionnaire （FFQ） with 149 items in 17 food categories was developed. A validation study on this new FFQ was conducted in Jiangsu and Beijing of China between 1999 and 2001. The period of study covered 1 year and the FFQ was validated by comparing with data obtained by a six repeated 24-hour recalls for 3 consecutive days, or a totally 18-day 24- hour recall throughout the year. A total of 271 healthy adult subjects were enrolled in the study. Food and nutrient intakes measured by the 18-day dietary recalls and food frequency questionnaires （FFQs） were computed in the National Institute for Nutrition and Food Safety, China CDC using the existing nutrition database. The average daily intake of foods and nutrients over the 18-day recall was used to compare with FFQ1 and FFQ2, which was conducted at the beginning and the end of the year, respectively. All statistical analyses were carried out using SAS software version 6.12.
文摘The plasma homocysteine concentration is a good indicator of various diseases such as cardiovascular disease, stroke, and dementia. This study examined the relationship between plasma homocysteine concentrations and dietary habits in a population of elderly Japanese people from the Amami Islands. Data from 1131 participants collected during a baseline survey for the Japan Multi-institutional Collaborative Cohort study, which is a prospective cohort study, were used. Information on dietary habits was collected using a food frequency questionnaire. The plasma homocysteine concentration was associated with age in women only. Smoking in men and menopause were significantly associated with homocysteine concentrations. Analysis of blood biochemical data showed that estimate of glomerular filtration rate negatively correlated with plasma homocysteine in women (R = ?0.91, p < 0.001) and men (R = ?0.49, p < 0.001). There was no common food associated with homocysteine concentrations among the groups, but in each group, some food types were associated with homocysteine concentrations. In men, Chinese tea was a common factor showing a negative correlation with homocysteine concentrations. Natto showed a negative correlation with homocysteine concentrations in non-smoking men (β = ?0.11, p < 0.05) and premenopausal women (β = ?0.20, p < 0.01). Eggs (β = ?0.21, p < 0.01) and food processed from fish eggs (β = ?0.21, p < 0.01) negatively correlated with homocysteine concentrations in smoking men. Miso soup (β = ?0.13, p < 0.01) and yoghurt (β = ?0.10, p < 0.05) negatively correlated with homocysteine concentrations in postmenopausal women. Consumption of folate-rich food did not necessarily correlate with a low plasma Hcy concentration.
