DR 8.26 FFQ 1.68 0.83 0 20.13 15.1 11.16 7.49 7.18 12.84 1.76 0 22.66 25.06 Freq
ID: 3380035 • Letter: D
Question
DR
8.26
FFQ
1.68
0.83
0
20.13
15.1
11.16
7.49
7.18
12.84
1.76
0
22.66
25.06
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 or week or month. A more accurate picture is obtained by obtaining a detailed food diary (DR) for several days, 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 is available, which statement is INCORRECT?DR
8.26
FFQ
1.68
0.83
0
20.13
15.1
11.16
7.49
7.18
12.84
1.76
0
22.66
25.06
Because r > 0, the amount that is truly consumed is always larger than what is stated on the FFQ. Typical consumption as stated on a FFQ is positively associated with what is actually consumed. All of the answer options are correct. The FFQ is a reasonable tool to obtain information on the amount of alcohol consumed by individuals.Explanation / Answer
The statement "Because r > 0, the amount that is truly consumed is always larger than what is stated on the FFQ.".
Positive correlation between two variables shows that as one variable increases second also increases.
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