Validation and Reliability of the Alzheimer’s Disease-Commonwealth Scientific and Industrial Research Organisation Food Frequency Questionnaire
Abstract
:1. Introduction
2. Materials and Methods
2.1. Participants
2.2. Study Design
2.3. Alzheimer’s Disease Food Frequency Questionnaire
2.4. Four-Day Weighed Food Record
2.5. Statistical Analysis
2.5.1. Reliability Study
2.5.2. Validation Study
3. Results
3.1. Reliability Study
3.2. Validation Study
4. Discussion
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Food or Beverage Item | Spearman’s Rank Correlation Coefficient | Number of Participants Consuming Item | Food or Beverage Item | Spearman’s Rank Correlation Coefficient | Number of Participants Consuming Item | Food or Beverage Item | Spearman’s Rank Correlation Coefficient | Number of Participants Consuming Item |
---|---|---|---|---|---|---|---|---|
Vegetables | Meat and Mixed Dishes | Dairy and Eggs | ||||||
Avocado—fresh | 0.810 *** | 105 | Roast lamb | 0.558 *** | 76 | Cheese—regular variety | 0.688 *** | 95 |
Baked beans—canned | 0.730 *** | 92 | Rissole/meat patty | 0.600 *** | 63 | Cheese—fat reduced variety | 0.830 *** | 19 |
Bean sprouts | 0.338 | 19 | Asian stir-fry | 0.602 *** | 78 | Cottage cheese | 0.674 *** | 33 |
Beetroot—canned | 0.813 *** | 81 | Mincemeat as a sauce | 0.632 *** | 78 | Ricotta cheese | 0.493 ** | 27 |
Bok choy | 0.610 *** | 47 | Ham | 0.650 *** | 90 | Soft cheese | 0.585 *** | 68 |
Broccoli | 0.623 *** | 124 | Beef stew/casserole | 0.667 *** | 49 | Milk—whole milk | 0.776 *** | 35 |
Brussels sprouts | 0.794 *** | 68 | Pizza | 0.684 *** | 24 | Milk—reduced fat milk | 0.606 *** | 38 |
Cabbage | 0.675 *** | 90 | Steak | 0.689 *** | 105 | Milk—reduced fat milk + added calcium and nutrients | 0.400 | 4 |
Capsicum | 0.658 *** | 122 | Roast beef/veal | 0.687 *** | 64 | Milk—skim/non-fat milk | 0.534 * | 20 |
Carrots | 0.526 *** | 131 | Gravy—powder prepared with water | 0.682 *** | 42 | Glass of milk | 0.686 *** | 38 |
Cauliflower | 0.722 *** | 115 | Pate/liver paste | 0.640 *** | 34 | Ice cream—regular | 0.757 *** | 59 |
Celery | 0.625 *** | 109 | Gravy—prepared from pan drippings | 0.641 *** | 28 | Ice cream—fat reduced | 0.748 * | 10 |
Coleslaw | 0.722*** | 96 | Homemade soup—vegetable | 0.699 *** | 34 | Milkshake/thickshake—regular fat milk | 0.732 ** | 15 |
Cucumber | 0.717 *** | 123 | Crumbed veal | 0.677 ** | 20 | Flavoured milk—regular fat | 0.956 ** | 6 |
Fresh fruit salad | 0.552 *** | 71 | Lamb chop or cutlet | 0.726 *** | 85 | Flavoured milk—reduced fat | 0.900 * | 5 |
Fried mixed vegetables | 0.427 ** | 47 | Bacon | 0.734 *** | 93 | Butter | 0.645 *** | 88 |
Garlic | 0.703 *** | 102 | Pork chop | 0.749 *** | 64 | Margarine | 0.638 *** | 60 |
Gherkins/pickled onions | 0.737*** | 52 | Roast pork/pork fillet | 0.751 *** | 57 | Cream—regular thickened (35%) | 0.848 *** | 36 |
Green beans | 0.569 *** | 113 | Beef curry | 0.758 *** | 19 | Cream—light thickened (18%) | 0.500 | 3 |
Green peas | 0.570 *** | 117 | Meat pie | 0.785 *** | 25 | Dairy-style dessert | 0.291 | 8 |
Green peas—canned | 0.500 | 3 | Sausages | 0.797 *** | 90 | Ice block/icy pole | 0.494 | 8 |
Lentils—dried/canned | 0.564 *** | 50 | Chicken stew/casserole | 0.790 *** | 15 | Custard—regular vanilla flavoured | 0.614 *** | 36 |
Lettuce | 0.447 *** | 124 | Continental sausage | 0.820 *** | 25 | Yoghurt—Greek-style natural | 0.902 *** | 32 |
Mushrooms—fresh | 0.579 *** | 75 | Homemade soup—pea and ham | 0.979 *** | 9 | Yoghurt—flavoured regular fat (3%) | 0.900 * | 5 |
Mushrooms—fried | 0.476 *** | 79 | Packet soup—mushroom | 1.000 *** | 2 | Yoghurt—flavoured low fat (.5%) | 0.949 | 4 |
Olives | 0.693 *** | 85 | Frankfurters/saveloys | 0.943 | 4 | Yoghurt—natural regular fat (4%) | 0.614 | 8 |
Onion—fried | 0.559 *** | 49 | Lamb liver | 0.715 * | 8 | Yoghurt—natural low fat (.5%) | 0.564 | 5 |
Onion—raw/baked/boiled | 0.560 *** | 79 | Beef goulash | 0.609 * | 11 | Yoghurt—natural reduced fat (2%) | 0.882 ** | 7 |
Other beans—dried or canned | 0.650 *** | 57 | Lamb curry | 0.615 | 9 | Boiled/poached egg | 0.555 *** | 95 |
Other pickled vegetables | 0.696 ** | 15 | Lamb stew/casserole | 0.716 | 6 | Fried egg | 0.633 *** | 61 |
Pumpkin | 0.705 *** | 118 | Canned soup—tomato | 0.591 | 8 | Omelette/scrambled eggs | 0.526 *** | 92 |
Silver beet/spinach | 0.594 *** | 90 | Canned soup—meat and vegetable | 0.975 ** | 5 | Cereals and Cereal Foods | ||
Strawberries | 0.667 *** | 121 | Homemade soup—chicken and vegetable | 0.643 * | 14 | Bread rolls | 0.504 *** | 67 |
Sweet potato | 0.614 *** | 111 | Mornay dishes | 0.483 *** | 49 | Flat breads | 0.514 ** | 32 |
Sweetcorn | 0.738 *** | 88 | Chicken curry | 0.782 *** | 30 | Crumpets or English muffins | 0.664 *** | 31 |
Sweetcorn—canned | 0.548 *** | 38 | Vegetarian curry/stew casserole | 0.342 * | 43 | Croissants | 0.807 *** | 19 |
Tomato—fresh | 0.536 *** | 133 | Homemade soup—pumpkin | 0.641 * | 11 | Crispbread/rice cake/cracker | 0.606 *** | 67 |
Tomato—fried/grilled | 0.523 *** | 77 | Canned soup—pea and ham | 0.667 | 5 | Muesli bar/health bar | 0.852 *** | 43 |
Tomatoes—canned | 0.552 *** | 88 | Packet soup—vegetable | −0.866 | 3 | Fruit loaf/currant bread | 0.801 *** | 40 |
Turnip, swede | 0.605 ** | 23 | Mincemeat dish | 0.082 | 69 | Cereal-based sweet desserts | 0.682 *** | 22 |
Vegetarian stir-fry | 0.570 *** | 45 | Packet soup—chicken noodle | 0.300 | 5 | Barley cooked | 0.858 *** | 16 |
Zucchini | 0.605 *** | 81 | Homemade soup—meat and vegetable | −0.168 | 10 | Porridge/oatmeal—unsweetened | 0.864 *** | 57 |
Potato—roasted | 0.427 *** | 96 | Canned soup—mushroom | −0.500 | 3 | Plain bran | 0.886 *** | 12 |
Jacket potatoes | 0.475 *** | 66 | Lamb kidney | −0.094 | 6 | Muesli—packaged untoasted/natural | 0.521 ** | 28 |
Potato—mashed with milk | 0.708 *** | 94 | Luncheon meat/devon | 0.105 | 4 | Muesli—homemade | 0.562 ** | 28 |
Potato salad | 0.790 *** | 78 | Parmagiana | 0.455 | 8 | Muesli—packaged toasted | 0.588 | 6 |
Oven baked hot chips prepared at home | 0.615 *** | 35 | Savoury pies/pastries | 0.434 ** | 39 | LSA mixture | 0.718 ** | 15 |
Potato—boiled | 0.645 *** | 85 | Chicken, Fish, and Seafoods | Sanitarium Weet-Bix | 0.623 * | 14 | ||
Fruit | Canned salmon—red salmon | 0.422 | 10 | Instant noodles | 0.635 ** | 16 | ||
Apple, pear—fresh baked | 0.763 *** | 121 | Canned salmon—pink salmon | 0.693 *** | 29 | Asian noodles | 0.643 *** | 34 |
Apricot—fresh | 0.614 *** | 66 | Canned salmon—Australian salmon | 0.310 | 7 | Couscous | 0.589 *** | 33 |
Banana | 0.713 *** | 128 | Canned tuna—regular variety canned in spring water | 0.577 ** | 27 | Plain pasta | 0.573 *** | 83 |
Blackberries | 0.604 * | 16 | Canned tuna—regular variety canned in oil | 0.776 ** | 13 | Filled pasta | 0.538 * | 21 |
Blueberries | 0.682 *** | 58 | Canned tuna—regular variety canned in brine | 0.000 | 4 | Packet pasta and sauce | 0.479 * | 23 |
Cherries | 0.547 *** | 72 | Canned tuna—flavoured variety canned in spring water | 0.755 | 7 | Brown rice | 0.733 ** | 18 |
Cranberries | 0.422 * | 29 | Canned tuna—flavoured variety canned in oil | 0.632 | 4 | Fried rice | 0.614 *** | 41 |
Figs—fresh | 0.658 *** | 42 | Other canned fish | 0.543 *** | 44 | White rice | 0.637 *** | 91 |
Fruits canned in juice | 0.684 *** | 40 | Steamed/grilled/boiled fish—other inexpensive fish—no coating | 0.353 | 6 | Risotto | 0.849 *** | 31 |
Fruits canned in syrup | 0.475 | 9 | Steamed/grilled/boiled fish—barramundi—no coating | 0.679 | 8 | Sweets and Snacks | ||
Fruits canned in water | 0.441 | 10 | Steamed/grilled/boiled fish—salmon—no coating | 0.776 *** | 23 | Chocolate-covered bar | 0.592 *** | 37 |
Green grapes—fresh | 0.521 *** | 106 | Steamed/grilled/boiled fish—snapper—no coating | 0.436 | 10 | Dark chocolate | 0.657 *** | 90 |
Kiwifruit | 0.695 *** | 72 | Seafood | 0.491 *** | 69 | Milk chocolate | 0.675 *** | 62 |
Mango | 0.607 *** | 98 | Fried fish—salmon—no coating | 0.949 | 4 | White chocolate | 0.454 | 15 |
Melon | 0.469 *** | 90 | Fried fish—snapper —flour | 0.500 | 3 | Vegemite, marmite, etc. | 0.714 *** | 71 |
Nectarine—fresh | 0.507 *** | 105 | Oven-baked fish—salmon—no coating | 0.376 | 7 | Honey, jam, marmalade | 0.603 *** | 89 |
Orange, mandarin, grapefruit | 0.726 *** | 111 | Oven-baked fish—Snapper—no coating | −0.500 | 3 | Peanut paste | 0.763 *** | 57 |
Other berries | 0.540 * | 15 | Crumbed chicken | 0.522 ** | 28 | Fancy sweet biscuits | 0.463 ** | 52 |
Other dried fruit | 0.532 *** | 53 | Chicken breasts, thighs, or wings—without skin | 0.621 *** | 83 | Salted biscuits | 0.618 *** | 71 |
Pawpaw | 0.668 ** | 17 | Chicken breasts, thighs, or wings—with skin | 0.474 * | 19 | Plain sweet biscuits | 0.648 *** | 64 |
Peach—fresh | 0.477 *** | 86 | Roast/barbeque chicken | 0.240 | 42 | Cake/sweet muffin | 0.654 *** | 90 |
Pineapple—fresh | 0.559 *** | 40 | Chicken cooked in simmer sauce | −0.002 | 16 | Potato crisps/Twisties/corn chips, etc. | 0.655 *** | 48 |
Plum—fresh | 0.529 *** | 91 | Takeaway Foods | Lollies, toffees | 0.599 ** | 21 | ||
Pomegranates | 0.693 | 8 | Garlic bread | 0.481 *** | 50 | Sweet bun/doughnut | 0.487 * | 27 |
Raisins, sultanas, or currants | 0.752 *** | 83 | Fries | 0.590 *** | 38 | Fruit pie or pastry or fritters | 0.208 | 24 |
Raspberries | 0.424 * | 25 | Hot chips | 0.647 *** | 52 | Popcorn—commercial | 0.866 | 3 |
Red/black grapes—fresh | 0.475 *** | 102 | Pizza | 0.632 *** | 64 | Sugar/honey added to cereals | 0.745 *** | 28 |
Watermelon | 0.505 *** | 92 | Meat/chicken pie | 0.055 | 11 | Sugar/honey added to hot beverages | 0.763 *** | 28 |
Beverages | Pastie | 0.640 *** | 30 | Chia seeds | 0.904 *** | 18 | ||
Milo/Quik/Ovaltine/cocoa/hot chocolate | 0.609 *** | 45 | Hamburgers—large | 0.601 ** | 18 | Flax seeds | 0.866 | 3 |
Green tea | 0.701 *** | 62 | Hamburgers—small | 0.785 ** | 11 | Pumpkin seeds | 0.767 *** | 25 |
Herbal tea | 0.746 *** | 56 | Sausage roll | 0.707 *** | 34 | Pumpkin seeds (roasted) | 0.416 | 9 |
Black tea | 0.878 *** | 76 | Deep fried seafood | 0.221 | 19 | Sesame seeds | 0.796 *** | 20 |
White tea | 0.500 | 4 | Deep fried chicken | 0.690 ** | 14 | Sesame seeds (roasted) | 0.679 | 7 |
Coffee | 0.880 *** | 118 | Deep fried battered fish | 0.763 *** | 48 | Sunflower seeds | 0.601 ** | 28 |
Water/spring water | 0.758 *** | 99 | Potato cakes/fritters | 0.195 | 8 | Almonds | 0.821 *** | 61 |
Unflavoured mineral water | 0.813 *** | 20 | Spring/chiko roll | 0.424 | 10 | Almonds (roasted) | 0.875 *** | 20 |
Pure fruit juice | 0.828 *** | 44 | Fried dim sum | 0.771 | 6 | Brazil nuts | 0.852 *** | 29 |
Fruit drink | 0.932 *** | 12 | Steamed dim sum | 0.366 | 10 | Cashew nuts | 0.389 * | 27 |
Pomegranate juice | 0.500 | 3 | Chicken sushi rolls | 0.598 *** | 31 | Cashew nuts (roasted) | 0.625 *** | 30 |
Vegetable juice | 0.644 ** | 16 | Meat sushi rolls | 0.654* | 13 | Hazelnuts | 0.495 | 7 |
Diet fizzy drink | 0.676 ** | 18 | Seafood sushi rolls | 0.553 *** | 49 | Hazelnuts (roasted) | 0.638 | 6 |
Regular fizzy drink | 0.523 * | 23 | Vegetarian sushi rolls | 0.688 *** | 31 | Macadamia nuts | 0.841 *** | 15 |
Low-calorie cordial | 0.882 * | 6 | Wraps/subs with chicken or fish as the main filling | 0.538** | 23 | Macadamia nuts (roasted) | 0.806 ** | 11 |
Regular cordial | 0.626 * | 13 | Wraps/Subs with beef, lamb, or pork as the main filling | 0.338 | 13 | Other nuts | 0.278 | 7 |
Red wine | 0.810 *** | 64 | Wraps/subs with sandwich meat as the main filling | 0.811 | 5 | Peanuts (salted or unsalted, roasted) | 0.783 *** | 30 |
Sparkling wine or Champagne | 0.861 *** | 48 | Subs/wraps with seafood as the main filling | −0.866 | 3 | Pecans | 0.877 *** | 12 |
Rose wine | 0.719 * | 10 | Miscellaneous | Pine nuts | 0.505 | 10 | ||
Medium white wine | 0.878 *** | 69 | Canola oil | 0.634 ** | 20 | Pine nuts (roasted) | 0.857 ** | 8 |
Sherry/port/liqueur | 0.874 *** | 22 | Coconut oil | 0.733 ** | 13 | Pistachios | 0.737 * | 10 |
Spirits | 0.917 *** | 28 | Dripping/lard | 0.000 | 5 | Pistachios (roasted) | 0.922 *** | 12 |
Low-alcohol beer | 0.862 *** | 28 | Extra virgin olive oil | 0.683 *** | 109 | Walnuts | 0.628 *** | 53 |
Regular beer | 0.937 *** | 29 | Olive oil | 0.514 *** | 43 | Walnuts (roasted) | 0.060 | 7 |
Peanut oil | −0.308 | 7 | ||||||
Sunflower oil | 0.405 * | 12 | ||||||
Marinades and other thick sauces | 0.519 *** | 47 | ||||||
Thick sauces | 0.622 *** | 62 | ||||||
Mayonnaise—regular | 0.765 *** | 39 | ||||||
Mayonnaise—fat reduced | 0.563 ** | 24 | ||||||
Salad dressing—full fat oil and vinegar style | 0.454 * | 30 | ||||||
Salad dressing—full fat creamy style | −0.400 | 4 | ||||||
Salad dressing—reduced/fat free vinegar style | 0.716 *** | 22 |
Nutrient | Mean WFR a | SD WFR a | Mean FFQ a | SD FFQ a | Pearson’s Correlation Coefficient b | Level of Agreement b,c |
---|---|---|---|---|---|---|
Energy | 8049.0 | 1938.0 | 11,391.6 | 3844.9 | 0.160 | Fairly Good |
Protein | 84.4 | 20.2 | 113.0 | 36.2 | 0.336 *** | Fairly Good |
Total fat | 76.6 | 25.0 | 129.7 | 58.3 | 0.356 *** | Fairly Good |
Saturated fat | 27.4 | 10.7 | 44.0 | 21.4 | 0.438 *** | Fairly Good |
Trans fatty acids | 1.2 | 0.6 | 2.1 | 1.2 | 0.418 *** | Poor |
Polyunsaturated fat | 13.3 | 5.9 | 20.1 | 10.2 | 0.403 *** | Fairly Good |
Monounsaturated fat | 29.0 | 11.5 | 54.7 | 26.9 | 0.285 *** | Fairly Good |
Cholesterol | 274.7 | 121.4 | 351.0 | 152.6 | 0.256 ** | Poor |
Available carbohydrate | 192.8 | 61.7 | 236.2 | 89.7 | 0.465 *** | Poor |
Sugars | 96.9 | 36.3 | 134.9 | 56.2 | 0.441 *** | Poor |
Starch | 94.8 | 38.5 | 99.9 | 48.4 | 0.428 *** | Fairly Good |
Dietary fibre | 26.6 | 7.2 | 42.3 | 14.5 | 0.343 *** | Poor |
Thiamin | 3.2 | 10.2 | 2.4 | 2.1 | 0.165 * | Fairly Good |
Riboflavin | 2.5 | 3.1 | 2.7 | 1.1 | 0.335 *** | Fairly Good |
Niacin | 23.4 | 18.6 | 31.4 | 10.8 | 0.266 ** | Fairly Good |
Niacin equivalents | 40.3 | 20.1 | 52.9 | 17.3 | 0.254 ** | Fairly Good |
Vitamin C | 150.3 | 200.6 | 249.2 | 117.3 | 0.280 ** | Fairly Good |
Vitamin E | 15.3 | 15.3 | 23.2 | 11.5 | 0.386 *** | Fairly Good |
Alpha tocopherol | 11.5 | 7.8 | 19.9 | 8.9 | 0.456 *** | Fairly Good |
Vitamin B6 | 5.2 | 15.7 | 2.4 | 0.8 | −0.092 | Poor |
Vitamin B12 | 7104.8 | 84214.4 | 6.6 | 3.6 | −0.032 | Good |
Total folate | 535.4 | 359.3 | 585.1 | 219.2 | 0.360 *** | Fairly Good |
Folic acid | 168.8 | 180.1 | 81.9 | 99.5 | 0.357 *** | Fairly Good |
Dietary folate equivalents | 645.7 | 437.4 | 639.9 | 257.1 | 0.405 *** | Fairly Good |
Vitamin A | 1172.8 | 1394.3 | 2412.7 | 1391.4 | 0.317 *** | Fairly Good |
Retinol | 334.9 | 374.4 | 606.2 | 833.6 | 0.340 *** | Fairly Good |
Beta carotene equivalents | 4263.2 | 2724.1 | 10,841.8 | 6524.6 | 0.426 *** | Fairly Good |
Beta carotene | 3500.5 | 2319.5 | 8564.7 | 5258.0 | 0.430 *** | Fairly Good |
Sodium | 2079.2 | 859.1 | 2448.4 | 1042.4 | 0.138 | Fairly Good |
Potassium | 3244.5 | 751.9 | 5241.3 | 1731.7 | 0.390 *** | Poor |
Magnesium | 397.1 | 159.9 | 485.6 | 168.0 | 0.384 *** | Poor |
Calcium | 1020.7 | 447.2 | 1146.7 | 489.8 | 0.377 *** | Fairly Good |
Phosphorus | 1488.8 | 337.2 | 2006.2 | 636.9 | 0.413 *** | Fairly Good |
Iron | 11.7 | 3.9 | 15.8 | 5.4 | 0.328 *** | Fairly Good |
Zinc | 17.7 | 72.5 | 14.2 | 4.5 | −0.044 | Good |
Selenium | 94.9 | 61.9 | 114.9 | 69.7 | 0.561 *** | Poor |
Iodine | 173.0 | 77.0 | 165.3 | 77.3 | 0.391 *** | Fairly Good |
VLC N3 | 16.8 | 106.8 | 0.8 | 0.8 | 0.462 *** | Good |
Linoleic Acid | 11.8 | 12.6 | 16.5 | 9.1 | 0.372 *** | Fairly Good |
Alpha Linolenic Acid | 33.5 | 265.6 | 2.3 | 1.5 | 0.192 * | Good |
Eicosapentaenoic Acid | 5.4 | 60.6 | 0.3 | 0.3 | 0.363 *** | Fairly Good |
Docosapentaenoic Acid | 0.1 | 0.1 | 0.2 | 0.1 | 0.436 ** | Poor |
Docosahexaenoic Acid | 3.7 | 40.4 | 0.3 | 0.3 | 0.455 ** | Good |
Caffeine | 209.1 | 502.3 | 137.2 | 130.3 | 0.474 ** | Good |
Water | 3380.5 | 6702.8 | 3119.3 | 2283.5 | 0.279 ** | Fairly Good |
Alcohol | 10.2 | 13.6 | 10.6 | 15.0 | 0.570 *** | Poor |
Nutrient | Same Quintile, % | Adjacent Quintile, % | Gross Misclassification, % a | Weighted κ b | Strength of Agreement c |
---|---|---|---|---|---|
Energy | 23.81 | 34.01 | 22.45 | 0.249 | Fair |
Protein | 25.85 | 31.97 | 16.33 | 0.076 | Slight |
Total fat | 23.81 | 40.14 | 17.01 | 0.249 | Fair |
Saturated fat | 25.85 | 34.69 | 14.97 | 0.076 | Slight |
Trans fatty acids | 30.50 | 36.17 | 16.31 | 0.002 | Slight |
Polyunsaturated fat | 29.93 | 36.73 | 15.65 | 0.003 | Slight |
Monounsaturated fat | 25.17 | 34.01 | 16.33 | 0.117 | Slight |
Cholesterol | 29.25 | 36.05 | 14.29 | 0.005 | Slight |
Available carbohydrate | 23.81 | 36.73 | 19.73 | 0.249 | Fair |
Sugars | 25.17 | 29.25 | 18.37 | 0.117 | Slight |
Starch | 33.33 | 30.61 | 12.93 | 0.000 | Slight |
Dietary fibre | 24.49 | 35.37 | 19.05 | 0.174 | Slight |
Thiamin | 27.21 | 35.37 | 13.61 | 0.029 | Slight |
Riboflavin | 28.57 | 34.01 | 14.97 | 0.009 | Slight |
Niacin | 25.53 | 43.97 | 14.89 | 0.100 | Slight |
Niacin equivalents | 21.09 | 44.22 | 14.97 | 0.743 | Substantial |
Vitamin C | 27.21 | 34.69 | 16.33 | 0.029 | Slight |
Vitamin E | 27.89 | 35.37 | 13.61 | 0.017 | Slight |
Alpha tocopherol | 29.08 | 32.62 | 14.89 | 0.007 | Slight |
Vitamin B6 | 24.11 | 32.62 | 19.15 | 0.221 | Fair |
Vitamin B12 | 28.37 | 33.33 | 16.31 | 0.013 | Slight |
Total folate | 29.93 | 34.01 | 12.93 | 0.003 | Slight |
Folic acid | 36.05 | 32.65 | 8.84 | 0.000 | Slight |
Dietary folate equivalents | 27.89 | 37.41 | 12.24 | 0.017 | Slight |
Vitamin A | 29.25 | 33.33 | 17.69 | 0.005 | Slight |
Retinol | 31.29 | 32.65 | 19.05 | 0.001 | Slight |
Beta carotene equivalents | 23.13 | 44.22 | 15.65 | 0.344 | Fair |
Beta carotene | 22.70 | 44.68 | 14.18 | 0.422 | Moderate |
Sodium | 25.17 | 32.65 | 18.37 | 0.117 | Slight |
Potassium | 19.05 | 36.73 | 17.69 | 0.772 | Substantial |
Magnesium | 27.21 | 31.97 | 12.24 | 0.029 | Slight |
Calcium | 19.05 | 40.82 | 12.24 | 0.772 | Substantial |
Phosphorus | 23.81 | 33.33 | 16.33 | 0.249 | Fair |
Iron | 26.53 | 35.37 | 12.24 | 0.048 | Slight |
Zinc | 21.09 | 36.05 | 19.05 | 0.743 | Substantial |
Selenium | 34.75 | 30.50 | 10.64 | 0.000 | Slight |
Iodine | 27.89 | 36.73 | 14.97 | 0.017 | Slight |
VLC N3 | 30.61 | 38.10 | 9.52 | 0.001 | Slight |
Linoleic acid | 26.53 | 39.46 | 15.65 | 0.048 | Slight |
Alpha linolenic acid | 23.13 | 44.22 | 14.97 | 0.344 | Fair |
Eicosapentaenoic acid | 31.91 | 36.88 | 14.18 | 0.000 | Slight |
Docosapentaenoic acid | 30.50 | 36.17 | 13.48 | 0.002 | Slight |
Docosahexaenoic acid | 29.79 | 41.13 | 10.64 | 0.003 | Slight |
Caffeine | 26.21 | 36.55 | 17.24 | 0.062 | Slight |
Water | 29.25 | 31.29 | 19.73 | 0.005 | Slight |
Alcohol | 44.22 | 44.22 | 3.40 | 0.000 | Slight |
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Gardener, S.L.; Lyons-Wall, P.; Martins, R.N.; Rainey-Smith, S.R. Validation and Reliability of the Alzheimer’s Disease-Commonwealth Scientific and Industrial Research Organisation Food Frequency Questionnaire. Nutrients 2020, 12, 3605. https://0-doi-org.brum.beds.ac.uk/10.3390/nu12123605
Gardener SL, Lyons-Wall P, Martins RN, Rainey-Smith SR. Validation and Reliability of the Alzheimer’s Disease-Commonwealth Scientific and Industrial Research Organisation Food Frequency Questionnaire. Nutrients. 2020; 12(12):3605. https://0-doi-org.brum.beds.ac.uk/10.3390/nu12123605
Chicago/Turabian StyleGardener, Samantha L., Philippa Lyons-Wall, Ralph N. Martins, and Stephanie R. Rainey-Smith. 2020. "Validation and Reliability of the Alzheimer’s Disease-Commonwealth Scientific and Industrial Research Organisation Food Frequency Questionnaire" Nutrients 12, no. 12: 3605. https://0-doi-org.brum.beds.ac.uk/10.3390/nu12123605