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Nutritional Epidemiology - Coggle Diagram

- - - - Alpha error - false positive
      - Beta error - false negative (Common here)
        
        Negative confounding
        
        Incorrect temporal period
        
        Low statistical power
        
        Misclassification of individual intake
        
        Limited dietary variation within populations
        
        Methodological sources of bias
  - - - Inter-Rater Reliability
        
        high agreement among judges or raters when making assessment decisions
      - Test-retest reliability
        
        refers to the consistency of a test over time, when completed by the same individual(s).
      - Parallel-forms reliability
        
        also referred to as equivalent forms reliability – is the degree to which two sets of measures in a study evaluate the same construct
      - Internal consistency
        
        is similar to parallel-forms reliability in that it evaluates the degree to which two measures assess the same construct. It is different, however, because it refers to individual items within a survey or questionnaire.
- - - - Day of the week
        
        Include all days
      - Seasonal
        
        adjusting for season
    - - True variation in food intake
      - Measurement error
- - - - significant under reporting of energy intake
      - greatest with food records - behaviuor changed during recording
      - FFQ - must match to the population
      - Under reportig greater among obese, women and for certein food such as snacks and sweets