Sentences with phrase «food frequency questionnaire»

The finding was consistent whether coffee intake was determined by 24 - hour recall or by food frequency questionnaire.

The researchers reviewed food frequency questionnaires for the years 1991 to 2001 and determined how often the participants consumed artificially - sweetened beverages.

Information was collected on their height, weight, food consumption by self - reported food frequency questionnaires, lifestyle and physical activity habits.

Coffee consumption was assessed with repeated food frequency questionnaires.

The team used a validated food frequency questionnaire to determine consumption of fish, vegetables, fruit, alcohol - containing beverages, dairy products, and meat.

The researchers, from the Dutch National Institute of Public Health and the Environment, Utrecht University, University Medical Center Groningen, used food frequency questionnaires completed by the parents of 598 Dutch children aged 8 - 13 years.

In a linked editorial, Dr Kathryn Fitzgerald of John Hopkins School of Medicine, Baltimore, emphasises the caveats for an observational study of this kind which relies on food frequency questionnaires that are not fully able to describe different types of fat.

Researchers1 studied more than 3,700 senior citizens, who completed food frequency questionnaires and two or more cognitive tests over the course of six years.

(2) As Chris Masterjohn has pointed out, the data consisted of food frequency questionnaires given to health professionals, and most respondents understated their red meat consumption.

Reproducibility and validity of an expanded self - administered semiquantitative food frequency questionnaire among male health professionals

At two early visits, participants filled out a 66 - item food frequency questionnaire, which asked how often, on average, the participants consumed each food item in what portion size over the previous year.

Selected participants did not have diabetes or prediabetes during an initial baseline examination and self - reported their long - term sugar - sweetened beverage and diet soda consumption habits through food frequency questionnaires.

On entering the study, participants completed a previously validated semi-quantitative food frequency questionnaire to collect information on coffee consumption, lifestyle and sociodemographic characteristics, anthropometric measurements, and previous health conditions.

Physical activity recall and 1 - week food frequency questionnaire were obtained at baseline and 3, 6, and 12 months to examine physical activity and dietary confounders as potential covariates.

Finally, according to the authors, «[T] he validation of the [food frequency questionnaire] showed that protein intake was particularly difficult to estimate.»

The major strengths of this study include its large sample size, prospective design, and repeated measures of caffeine, caffeinated beverages, and other covariates, which relied on the use of validated food frequency questionnaires administered 7 times during a period of 22 years.

Researchers analyzed food frequency questionnaire data and tracked health outcomes for 16 years (1992 - 2008) on 26,902 male health professionals ages 45 - 82.

Using country - specific food frequency questionnaires, PURE documented diet in 135,335 individuals, aged 35 to 70 years, from countries in North America and Europe, South America, the Middle East, South Asia, China, South East Asia and Africa.

For both studies, dietary fibre intake was measured using Food Frequency Questionnaire responses.

Information on paternal vitamin D intake from baseline food frequency questionnaires and children's height and weight measurements were available for 213 and 148 father - child pairs when children were aged 5 and 9 years respectively.

The PHS II includes more than 14,000 US male physicians over 50 years of age who have completed comprehensive food frequency questionnaires.

All of the participants, which were patients of the University of Michigan Head and Neck Specialized Program of Research Excellence, were asked to track their intake of food, beverages and supplements for a year prior to diagnosis and a year following treatment using the Harvard Food Frequency Questionnaire.

Stratified analyses were also conducted by methodologic quality, sex, type of dietary assessment tool (food frequency questionnaires vs food records and 24 - hour recall), continental region (North America, Europe, and Asia), and type of prevention strategy (primary vs secondary) to assess the influence of these factors on the observed associations between diet and CHD.

Participants self - reported their intake of sugar sweetened beverages, including soda and fruit drinks, using items from the Youth / Adolescent Food Frequency Questionnaire [51].

Diet was assessed using food frequency questionnaires, mood using validated questionnaires.

Women were sorted into four quartile groups based on the amount of isoflavone they were estimated to have consumed, calculated from self - reported food frequency questionnaires.

Diet was assessed at phases 3, 5, 7 and 9 using a 127 - item machine - readable semi-quantitative food frequency questionnaire (FFQ) which originates from the tool used in the US Nurses» Health Study, a self - administered questionnaire on habitual diet over the past 12 months30, 31.

All subjects were between 40 and 70 years old, without high risk of CRC, and answered a food frequency questionnaire.

Image - based dietary assessment, or IBDA, aims to reduce or eliminate the inaccuracies that commonly accompany traditional methods such as written dietary records, 24 - hour dietary recalls and food frequency questionnaires.

Diet was assessed every 4 years using a validated food frequency questionnaire.

All study participants completed a food frequency questionnaire, detailing how much and how often they had eaten 187 food items over the preceding four weeks.

The men's diet was assessed by means of a food frequency questionnaire, and they were asked how often, on average, they had consumed how many portions of fruit and vegetables, using standard portion sizes such as one apple, or half an avocado.

Over an 18 - month period, the researchers used data from the Environment and Reproductive Health (EARTH) study, including semen samples from 155 men who were being treated at a Boston fertility clinic and a food frequency questionnaire they completed.

Dr. Arun Swaminath explained that the study's data on omega - 3 intake came from «food frequency questionnaires,» and these types of studies «have significant weaknesses to the point that some have questioned whether they should be abandoned altogether.»

This study, published in the European Respiratory Journal, estimated the sugar intake of soon - to - be moms using a food frequency questionnaire that covered all main food groups.

In order to assess dietary intake, most epidemiological studies use Food Frequency Questionnaires, or FFQs.

Every one of them was free from cancer and cardiovascular disease at beginning of the study, when they completed the food frequency questionnaire used in the research.

In all the studies, dietary magnesium levels were established making use of a 24 - hour dietary recall or a food frequency questionnaire.

Currently at over 275,000 participants, people were given «food frequency questionnaires» every four years.