Study design & method

1. MZ:230
2. DZ:340

1. Biochemical
2. Dietary
3. Zygosity
4. SNP analysis
5. Fatty acid analysis
   1. Adipose tissue
   2. Plasma total

Nota:

• Cross-sectional: 1. involve observation of all of a population OR a subset 2. takes place at one specific time point 3. aim: provide data on the entire population under study 4. descriptive 5. can be used to describe: RR, OR, absolute risk 6. used to describe some features of the population: a. prevalence of illness b. support inferences of cause & effect (answer Q about cause of disease) 7. not suitable to study rare diseases 8. moderately expensive 9. rely on memory introduce bias (recalling the past)

1. SEM: MX
2. ANOVA
3. GEE
4. PCA