Frequent Food Questionnaires (FFQ) Are a Simple Way to Obtain

question 27

Multiple Choice

Frequent food questionnaires (FFQ) are a simple way to obtain information on the foods individuals consume by asking them questions about typical amounts of food consumed in a day, a week, or a month. A more accurate picture is obtained by obtaining a detailed food diary (DR) for several days that are randomly chosen over a certain time period. The data obtained from a frequent food questionnaire can be compared with the food diary to assess the validity of the questionnaire. The correlation between alcohol consumption from the food questionnaire and diary was r = 0.89, based on seven individuals: Based on the seven individuals for whom data are available, which of the following statements is incorrect?

• A)Typical consumption, as stated on the FFQ, is positively associated with what is actually consumed.
• B)The FFQ is a reasonable tool to obtain information on the amount of alcohol consumed by individuals.
• C)Because r > 0, the amount that is truly consumed is always larger than what is stated on the FFQ.
• D)All of the answer options are correct.

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Definitions:

Efficient Scale

The level of production at which the average total costs of production are minimized.

Long-Run Equilibrium

A state in which economic forces such as supply and demand are balanced, and in the context of production, all inputs, including prices and wages, can be adjusted.

Free Entry

A market condition where there are no barriers for new competitors to enter the market and compete with existing firms.

Fashion Jewelry

Jewelry designed to complement the current fashion trends rather than serve as collectible or investment items, often made with non-precious materials.