DIETARY FOOD FREQUENCY QUESTIONNAIRE (AGES 12-16 YEARS) The Dietary Food Frequency questionnaire was administered to youths aged 12-16 years in the mobile examination center (MEC). Respondents were asked how often over the past month they had eaten specified food items. The foods were listed in groups, targeting those high in vitamins A and C and calcium. Respondents reported their consumption as the number of times per day, per week, per month, or never. It is important to note that portion sizes were not defined, and responses represent "number or times" as determined by the respondent. The questionnaire was identical to the food frequency section of the Household Adult Questionnaire administered to adults aged 17 years and above (see Adult Household Data File). MEC examination weights (WTPFEX6) should be used for analysis of the youth Dietary Food Frequency (Ages 12-16 years). The interview weights (WTPFQX6), however, should be used when analyzing the adult food frequency data. For more information on the use of sample weights in NHANES III data analysis, refer to the NHANES III Analytic and Reporting Guidelines (U.S. DHHS, 1996b). Data processing and editing were performed for consistency of responses within the sections of the questionnaire. As part of the editing process, the frequency of consumption of food items was standardized to the number of times consumed per month. Notes have been provided for variables that were standardized or recoded or that require additional comments. NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ MILK AND MILK PRODUCTS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4654-4656 How often (per month) did you have See note FFP1AS chocolate milk and hot cocoa? 769 000 Never 1214 001-194 95 888 Blank but applicable 1 999 Don't know 29232 Blank 4657-4659 How often (per month) did you have milk See note FFP1BS to drink or on cereal? Do not count small amounts of milk added to coffee or tea. 130 000 Never 1853 001-304 94 888 Blank but applicable 2 999 Don't know 29232 Blank 4660-4661 What type of milk was it? Was it See note FFP1D1 usually whole, 2%, 1%, skim, nonfat, or some other type? 931 01 Whole/regular 605 02 2%/low fat 67 03 1% 159 04 Skim/nonfat 1 05 Buttermilk 1 06 Evaporated 100 88 Blank but applicable 150 99 Don't know 29297 Blank 4662-4664 Yogurt and frozen yogurt? (per month) See note FFP1ES 1415 000 Never 569 001-091 94 888 Blank but applicable 1 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ MILK AND MILK PRODUCTS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4665-4667 Ice cream, ice milk, and milkshakes? See note FFP1FS (per month) 361 000 Never 1617 001-304 98 888 Blank but applicable 3 999 Don't know 29232 Blank 4668-4670 Cheese, all types including American, See note FFP1GS Swiss, cheddar, and cottage cheese? (per month) 229 000 Never 1748 001-213 96 888 Blank but applicable 6 999 Don't know 29232 Blank 4671-4673 Pizza, calzone, and lasagna? (per month) See note FFP1HS 279 000 Never 1700 001-065 98 888 Blank but applicable 2 999 Don't know 29232 Blank 4674-4676 Cheese dishes such as macaroni and See note FFP1IS cheese, cheese nachos, cheese enchiladas, and quesadillas? (per month) 422 000 Never 1556 001-091 98 888 Blank but applicable 3 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ MAIN DISHES, MEAT, FISH, CHICKEN, AND EGGS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4677-4679 How often (per month) did you eat any See note FFP2AS type of stew or soup containing vegetables, including minestrone, tomato, and split pea? 691 000 Never 1279 001-274 98 888 Blank but applicable 11 999 Don't know 29232 Blank 4680-4682 Spaghetti and pasta with tomato sauce? See note FFP2BS (per month) 481 000 Never 1499 001-061 98 888 Blank but applicable 1 999 Don't know 29232 Blank 4683-4685 Bacon, sausage (chorizo) and luncheon See note FFP2CS meats such as hot dogs, salami, and bologna? (per month) 155 000 Never 1824 001-152 98 888 Blank but applicable 2 999 Don't know 29232 Blank 4686-4688 Liver and other organ meats such as See note FFP2DS heart, kidney, tongue, and tripe (menudo)? (per month) 1596 000 Never 380 001-061 98 888 Blank but applicable 5 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ MAIN DISHES, MEAT, FISH, CHICKEN, AND EGGS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4689-4691 Beef, including hamburger, steaks, See note FFP2ES roast beef, and meatloaf? (per month) 63 000 Never 1917 001-152 98 888 Blank but applicable 1 999 Don't know 29232 Blank 4692-4694 Pork and ham, including roast pork, See note FFP2FS pork chops, and spare ribs? (per month) 434 000 Never 1544 001-122 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4695-4696 Shrimp, clams, oysters, crab, and See note FFP2GS lobster? (per month) 1259 00 Never 722 01-30 98 88 Blank but applicable 29232 Blank 4697-4699 Fish including fillets, fish sticks, See note FFP2HS fish sandwiches, and tuna fish? (per month) 610 000 Never 1368 001-122 98 888 Blank but applicable 3 999 Don't know 29232 Blank 4700-4702 Chicken, all types, including baked, See note FFP2IS fried, chicken nuggets, and chicken salad? Include turkey. (per month) 125 000 Never 1855 001-152 98 888 Blank but applicable 1 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ MAIN DISHES, MEAT, FISH, CHICKEN, AND EGGS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4703-4705 How often (per month) did you have eggs See note FFP2JS including scrambled, fried, omelettes, hard-boiled eggs, and egg salad? 424 000 Never 1556 001-091 98 888 Blank but applicable 1 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ FRUIT AND FRUIT JUICES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4706-4708 How often (per month) did you have See note FFP3AS orange juice, grapefruit juice and tangerine juice? 269 000 Never 1711 001-274 98 888 Blank but applicable 1 999 Don't know 29232 Blank 4709-4711 Other fruit juices such as grape juice, See note FFP3BS apple juice, cranberry juice, and fruit nectars? (per month) 724 000 Never 1254 001-243 98 888 Blank but applicable 3 999 Don't know 29232 Blank 4712-4714 Citrus fruits including oranges, See note FFP3CS grapefruits, and tangerines? (per month) 563 000 Never 1415 001-152 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4715-4717 Melons including cantaloupe, honeydew, See note FFP3DS and watermelon? (per month) 1144 000 Never 835 001-274 99 888 Blank but applicable 1 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ FRUIT AND FRUIT JUICES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4718-4720 Peaches, nectarines, apricots, guava, See note FFP3ES mango, and papaya? (per month) 1132 000 Never 846 001-122 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4721-4723 How often (per month) did you have any See note FFP3FS other fruits such as apples, bananas, pears, berries, cherries, grapes, plums, and strawberries? (Include plantains.) 193 000 Never 1786 001-182 99 888 Blank but applicable 1 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ VEGETABLES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4724-4726 How often (per month) did you have See note FFP4AS carrots and vegetable mixtures containing carrots? 791 000 Never 1181 001-091 100 888 Blank but applicable 7 999 Don't know 29232 Blank 4727-4729 Broccoli? (per month) See note FFP4BS 1098 000 Never 877 001-122 99 888 Blank but applicable 5 999 Don't know 29232 Blank 4730-4732 Brussels sprouts and cauliflower? See note FFP4CS (per month) 1583 000 Never 395 001-122 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4733-4735 White potatoes, including baked, mashed, See note FFP4DS boiled, french-fries, and potato salad? (per month) 65 000 Never 1914 001-061 99 888 Blank but applicable 1 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ VEGETABLES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4736-4737 Sweet potatoes, yams, and orange squash See note FFP4ES including acorn, butternut, hubbard, and pumpkin? (per month) 1374 00 Never 604 01-30 99 88 Blank but applicable 2 99 Don't know 29232 Blank 4738-4740 Tomatoes including fresh and stewed See note FFP4FS tomatoes, tomato juice, and salsa? (per month) 688 000 Never 1290 001-091 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4741-4743 Spinach, greens, collards, and kale? See note FFP4GS (per month) 1249 000 Never 729 001-086 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4744-4746 Tossed salad? (per month) See note FFP4HS 649 000 Never 1329 001-152 99 888 Blank but applicable 2 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ VEGETABLES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4747-4749 Cabbage, cole slaw, and sauerkraut? See note FFP4IS (per month) 1286 000 Never 692 001-108 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4750-4752 Hot red chili peppers. Do not count See note FFP4JS ground red chili peppers? (per month) 1646 000 Never 330 001-152 99 888 Blank but applicable 4 999 Don't know 29232 Blank 4753-4755 Peppers including green, red, and See note FFP4KS yellow peppers? (per month) 1310 000 Never 668 001-122 99 888 Blank but applicable 2 999 Don't know 29232 Blank 4756-4758 Any other vegetables such as green See note FFP4LS beans, corn, peas, mushrooms, and zucchini? (per month) 464 000 Never 1515 001-152 99 888 Blank but applicable 1 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ BEANS, NUTS, AND GRAIN PRODUCTS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4759-4761 How often (per month) did you have See note FFP5AS beans, lentils, and (chickpeas/ garbanzos)? Include kidney, pinto, refried, black, and baked beans. 550 000 Never 1428 001-318 100 888 Blank but applicable 1 999 Don't know 29232 Blank 4762-4764 Peanuts, peanut butter, other types of See note FFP5BS nuts, and seeds? (per month) 537 000 Never 1437 001-243 100 888 Blank but applicable 5 999 Don't know 29232 Blank 4765-4767 How about All-Bran, All-Bran Extra See note FFP5CS Fiber, 100% Bran, and Fiber One? (per month) 1529 000 Never 435 001-061 100 888 Blank but applicable 15 999 Don't know 29232 Blank 4768-4770 Total, Product 19, Most, and Just Right? See note FFP5DS (per month) 1567 000 Never 396 001-122 100 888 Blank but applicable 16 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ BEANS, NUTS, AND GRAIN PRODUCTS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4771-4773 All other cold cereals like corn flakes, See note FFP5ES Cheerios, Rice Krispies, and presweetened cereals? (per month) 261 000 Never 1712 001-122 100 888 Blank but applicable 6 999 Don't know 29232 Blank 4774-4776 Cooked, hot cereals like oatmeal, cream See note FFP5FS of wheat, cream of rice, and grits? (per month) 1134 000 Never 844 001-213 100 888 Blank but applicable 1 999 Don't know 29232 Blank 4777-4779 How often (per month )did you have white See note FFP5GS bread, rolls, bagels, biscuits, English muffins, and crackers? Include those used for sandwiches. 51 000 Never 1927 001-334 101 888 Blank but applicable 29232 Blank 4780-4782 Dark breads and rolls, including whole See note FFP5HS wheat, rye, and pumpernickel? (per month) 1173 000 Never 802 001-122 100 888 Blank but applicable 4 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ BEANS, NUTS, AND GRAIN PRODUCTS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4783-4785 Corn bread, corn muffins, and corn See note FFP5IS tortillas? (per month) 643 000 Never 1334 001-152 100 888 Blank but applicable 2 999 Don't know 29232 Blank 4786-4788 Flour tortillas? (per month) See note FFP5JS 1112 000 Never 864 001-152 100 888 Blank but applicable 3 999 Don't know 29232 Blank 4789-4791 Rice? (per month) See note FFP5KS 441 000 Never 1535 001-304 100 888 Blank but applicable 3 999 Don't know 29232 Blank 4792-4794 Salted snacks such as potato chips, See note FFP5LS taco chips, corn chips, and salted pretzels and popcorn? (per month) 159 000 Never 1818 001-152 100 888 Blank but applicable 2 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ DESSERTS, SWEETS, AND BEVERAGES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4795-4797 How often (per month) did you have cakes,See note FFP6AS cookies, brownies, pies, doughnuts, and pastries? 180 000 Never 1796 001-152 100 888 Blank but applicable 3 999 Don't know 29232 Blank 4798-4800 Chocolate candy and fudge? (per month) See note FFP6BS 550 000 Never 1426 001-182 100 888 Blank but applicable 3 999 Don't know 29232 Blank 4801-4803 How often (per month) did you have See note FFP6CS Hi-C, Tang, Hawaiian Punch, Koolaid, and other drinks with added vitamin C? 366 000 Never 1612 001-243 100 888 Blank but applicable 1 999 Don't know 29232 Blank 4804-4806 Diet colas, diet sodas, and diet drinks See note FFP6DS such as Crystal Light? (per month) 1415 000 Never 564 001-182 100 888 Blank but applicable 29232 Blank 4807-4809 Regular colas and sodas, not diet? See note FFP6ES (per month) 193 000 Never 1782 001-182 101 888 Blank but applicable 3 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ DESSERTS, SWEETS, AND BEVERAGES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4810-4812 Regular coffee with caffeine? See note FFP6FS (per month) 1658 000 Never 320 001-152 100 888 Blank but applicable 1 999 Don't know 29232 Blank 4813-4815 Regular tea with caffeine? See note FFP6GS (per month) 1356 000 Never 617 001-213 100 888 Blank but applicable 6 999 Don't know 29232 Blank 4816-4818 Beer and lite beer? (per month) See note FFP6HS 1847 000 Never 130 001-061 101 888 Blank but applicable 1 999 Don't know 29232 Blank 4819-4820 Wine, wine coolers, sangria, and See note FFP6IS champagne? (per month) 1835 00 Never 71 01 24 02 7 03 22 04 4 05 2 06 5 09 2 13 1 17 4 30 101 88 Blank but applicable 1 99 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ DESSERTS, SWEETS, AND BEVERAGES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4821-4822 Hard liquor such as tequila, gin, vodka, See note FFP6JS scotch, rum, whiskey and liqueurs, either alone or mixed? (per month) 1890 00 Never 88 01-30 101 88 Blank but applicable 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ FATS ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4823-4825 Margarine? (per month) See note FFP7AS 548 000 Never 1401 001-182 100 888 Blank but applicable 30 999 Don't know 29232 Blank 4826-4828 Butter? (per month) See note FFP7BS 688 000 Never 1267 001-243 100 888 Blank but applicable 24 999 Don't know 29232 Blank 4829-4831 Oil and vinegar, mayonnaise and salad See note FFP7CS dressings such as Italian and Thousand Island, including those added to salads and sandwiches? (per month) 368 000 Never 1608 001-213 100 888 Blank but applicable 3 999 Don't know 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ OTHER FOODS OR BEVERAGES ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4832-4833 Codes for first missed food/beverage See note FFP8AFC 1943 00 No other 2 03 Decaffeinated/herbal tea 13 04 Sports drinks, popsicles, fruit drinks 2 05 Water 3 06 Soy products, including tofu 15 08 Other 101 88 Blank but applicable 29232 Blank 4834-4836 How often (per month) did you eat... See note FFP8AS in the past month? 35 004-122 101 888 Blank but applicable 31175 Blank 4837-4838 Codes for second missed food/beverage FFP8BFC 33 00 No other 2 08 Other 101 88 Blank but applicable 31175 Blank 4839 How often (per month) did you eat... See note FFP8BS in the past month? 1 4 1 5 101 8 Blank but applicable 31208 Blank NHANES III Examination Data File ------------------------------------------------------------------------ DIETARY FOOD FREQUENCY (AGES 12-16 YEARS) ------------------------------------------------------------------------ GENERAL INFORMATION ------------------------------------------------------------------------ Positions Item description SAS name Counts and code Notes ------------------------------------------------------------------------ 4840 Respondent FFP10 1971 1 Self 13 2 Proxy 95 8 Blank but applicable 29232 Blank 4841-4844 Interviewer number FFPEXMNR 157 4001 180 4002 126 4003 276 4004 678 4005 613 4006 1 4101 44 7002 3 7007 1 7073 29232 Blank NHANES III Examination Data File ------------------------------------------------------------------------ THIS PAGE INTENTIONALLY LEFT BLANK NOTES FFPA1S, FFP1BS, FFP1ES-FFP7CS, FFP8AS, FFP8BS: Frequency of consumption of food item per month The frequency of consumption variables were standardized as "times per month" using the conversion factors 4.3 weeks/month and 30.4 days/month rounded to the nearest whole number. If the frequency of consumption was reported as "never," the value was recorded as zero. FFP1D1: Usual type of milk consumed Only usual milk consumed was recorded here. If more than one milk type was reported as "usual," the first milk reported was recorded. Guidelines based on fat content were developed in order to recode other milks that were reported but not listed and to create new categories. Codes/recodes Reported usual milk 01 (whole/regular milk) goat's milk 02 (2%/low fat) 03 (1% milk) acidophilus milk; lactose-reduced milk 04 (skim/nonfat milk) hot chocolate mix; powdered milk; 0.5% milk 05 (buttermilk) 06 (evaporated) 07 (other not specified) 11 half and half/cream FFP8AFC: New codes for other foods not listed Respondents also were asked about other foods not listed in the food frequency questionnaire. Responses to this question from both the adult and the youth food frequency questionnaires were edited by first determining whether the food could be coded back into an existing category. When possible, the frequency of consumption of that food was added to the original response for the pre-existing category. If the original response was "Never consumed," then the consumption frequency for the "Other food not listed" replaced the original response. Foods that were reported using frequency units were first converted to a common unit; the frequencies were summed to produce whole number estimates. For example, if the reported frequency for the category "Other vegetables" was once per day and asparagus consumption once per week was reported for "other food not listed," then the frequency for asparagus consumption was added to the frequency of the "Other vegetables" category and recalculated as a consumption of eight per week. When it was not possible to recode a response, a determination was made about whether a new category should be created based on the reported frequency of the food or whether the food represented an important source of a specific nutrient. The following eight new food groups were defined: 01 Egg substitutes 02 Decaffeinated coffee and espresso 03 Decaffeinated/herbal tea 04 Sports drinks, fruit drinks (excluding juices but including tamarind drinks), and popsicles 05 Water, including tap, mineral, spring, seltzer, soda 06 Soy products, including tofu, soy milk, soy ice cream, soy cheese, soy hamburgers, soy hot dogs, soy flour, and textured vegetable protein 07 Non-alcoholic beer/wine 08 Others not specified or not elsewhere classified, including diet, breakfast, and nutrition drinks, pudding, condiments, sour or whipped cream, granola bars, and gelatin