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A snapshot of the summary - Food components and health
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1 Week 1 Basic principles
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1.2 Study disign
This is a preview. There are 4 more flashcards available for chapter 1.2
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What are the types of experimental studies and what is it?Intervention studies are the type
Experimental study's are the most powerful. You actually do an interventional experiment. -
What are the types of observational studies?
- prospective cohort studies
- case-control studies
- cross sectional studies
- Ecological population based studies
Diet of people is not changed. They are studied in there natural context. It can not lead to hard conclusions only associations. -
What is a FFQ?A FFQ stands for food frequency questionnaire
It assess how often you eat certain foods and in what amount.
It is a dietary assessment method -
What is a 24 h dietary recall?This is a dietary assessment method.
A dietitian writes down what a person ate in the last 24h (usually performed several times. -
What is a food diary?This is a dietary assessment method.
It is written down and weighted what people eat.
Unfortunalty people tend to change there eating habits and loos motivation and forget to write down things. -
What are food composition tables?These tables contain information about nutritional content of food, unfortunately they are incomplete and many food products are not listed.
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What is a cross sectional study?This is a observational study.
The dietary intake is linked to a health or disease related paramater. This is done at a single moment.
The downside is that you don't now which one came first. (diet coke or obesity)
So there is risk of cofounding -
What is a case control study?This is a observational study.
The dietary intake of sick people is compared with the dietary intake of healthy people. So there is a control group. You look in the past with this study with a food frequency questioner.
The advantage is that you can study rear diseases.
The disadvantage is that there could be bias and cofounding. -
What is a cohort study?People are flooded for a long time and when they get sick later in life it is coupled to the things they awnserd in the FFQ.
This is the most powerful observation study.
disadvantages:
they relay on FFQ
Cofounding can happen -
What is a intervention study?You don't just observe you change something. So you intervene
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2 groups are made one who gets the treatment and one who gets a placebo. You measure the hanges that happen before and after the treatment.
advantage: you have avoidance without cofounding and bias.
disadvantages: If you wand to see if people get have to follow them for many years.
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The following topics are covered in this summary
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cells, enzymes, produce
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glucose, fructose, fibers
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liver, pancreatic, monosaccharides
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gi, food, glucose
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fibers, soluble, health
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fatty, oil, double
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acids, cholestrol, fat
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fat, weight, obesity
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acid, epa, fatty
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heart, ldl, cholestrol
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acid, ldl, hdl
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protein, proteins, amino
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proteins, absorbed, polypeptins
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function, protein, cells
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balence, nitrogen, proteins
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pdcaas, aa, proteins
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food, intake, body
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energy, cal, fibers
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energy, kcal, active
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fat, body, bmi
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obesity, factors, social
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less, weight, energy
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rda, intake, healthy
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vitamin, acid, retinol
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vitamin, calcium, d3
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vitamin, blood, alpha-tocopherol
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vitamin, proteins, blood
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energy, metabolism, groups
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vitamin, deficiency, blood
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folate, folates, cells
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b12, vitamin, cells
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vitamins, food, intake
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water, body, proteins
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water, system, dehydration
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water, mineral, waters
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minerals, bioavailability, foods
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salt, fluid, sodium
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proteins, body, supplements
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fat, fatty, intensity