Questionnaires to assess the consumption of specific foods have been developed and are available for use as described below.
Soy questionnaire
Fat-related questionnaire
Caffeine questionnaire
The soy questionnaire was developed to assess the patterns and correlates of soy consumption among postmenopausal women in the United States. It contains questions about the consumption of 20 soy foods and supplements. It has been used with a number of other studies since 2003.
Read the following publication for more information:
Frankenfeld CL, Patterson RE, Horner NK, Neuhouser ML, Skor HE, Kalhorn TF, Howald WN, Lampe JW. Validation of a soy food frequency questionnaire and evaluation of correlates of plasma isoflavone concentrations in postmenopausal women. Am J Clin Nutr 2003; 77:674-80.
The fat-related diet habits questionnaire was designed to assess eating behaviors associated with a low-fat diet.
There are five fat-related dietary patterns (factors): substitute specially manufactured low-fat foods; modify meat; avoid frying foods; replace high-fat foods with lower-fat foods such as fruits and vegetables that result in a change in overall cuisine; and avoid fat as a spread or flavoring.
Responses are on a four-point scale (1=usually or always, 2=often, 3=sometimes, 4=rarely or never), which are coded 1 through 4 to correlate positively with fat intake. Scoring the questionnaire will give you a general idea about respondents' low-fat eating patterns; the lower the score, the lower the dietary fat intake.
This questionnaire was designed by Dr. Alan Kristal and is available to download and use free of charge.
The caffeine questionnaire is available to supplement the general food frequency questionnaire on the dietary intake of caffeine. This questionnaire is being used in a large study at Fred Hutchinson. At present, data collection from this study is still in process and the processing of data has not begun. There is no plan to validate the caffeine questionnaire with dietary recalls.
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