DR 826 FFQ 168 083 0 2013 151 1116 749 718 1284 176 0 2266 2

8.26

FFQ

1.68

0.83

20.13

15.1

11.16

7.49

7.18

12.84

1.76

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.

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.

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 foo

DR 826 FFQ 168 083 0 2013 151 1116 749 718 1284 176 0 2266 2

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