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Epidemiology and Genomics Research Program

Differences Between Canadian DHQ (C-DHQ I) and Canadian DHQ II (C-DHQ II)

Alternate Version Available

You are viewing the web site for DHQ II. The latest version for the U.S. is the DHQ III; however, DHQ III does not yet have a Canadian version. The Canadian version of DHQ II is still available.

Questions Added or Modified on C-DHQ II:

Tomato and vegetable juice: Separated into two questions.

Milk: Added almond milk as a milk substitute; added separate question on chocolate milk, with sub-category for reduced-fat or fat-free; added separate question on milkshake.

Water: Added sub-category for vitamin water.

Wine: Added sub-category for red wine.

Cooked breakfast cereals: Added Red River; added sub-category for oatmeal, other cooked cereals with fat added; added sub-category for oatmeal, other cooked cereals with added milk.

Cold breakfast cereal: Added sub-category for fortified cereal (Vector or PC Force Active); added sub-category for "All-Bran" types.

Cauliflower and Brussels sprouts: Separated into two questions.

Lettuce: Added sub-category to include dark green vegetables.

French fries: Includes poutine.

Bread or rolls as part of sandwiches: Includes flatbreads (such as pita, roti or tortilla).

Bread or rolls NOT as part of sandwiches: Includes flatbreads (such as pita, roti or tortilla).

Hamburgers or cheeseburgers: Added separate question on burgers from fast food or other restaurants and 'Not from fast food or restaurants'; sub-category for burgers NOT from fast food or restaurant includes lean or extra-lean ground beef.

Hot dog: Added wieners.

Fish and seafood category: Fish and shellfish separated into two questions:

  • Shellfish: Fried and not fried; and
  • Fish: Added question for Dark oily fish; Ready-to-eat battered fish or fish sticks; and white or lean fish.

Meat: Added meat cooking questions (regarding outside and inside appearance after cooking).

Tofu, soy burgers or soy meat-substitutes: Tofu separated from soy burgers/soy meat substitutes.

Soup: Bean sub-category includes bean, pea, and lentil soups.

Baking powder biscuits: Includes scones and tea biscuits.

Potato chips, tortilla chips and corn chips: Tortilla/corn chips and potato chips separated into two questions.

Nuts and seeds: Seeds in separate question from nuts; sub-category added for peanuts.

Yogurt: Added sub-category for low-fat or fat-free.

Ice cream: Does not include sherbet.

Eggs: Sub-category added for egg substitutes or egg whites.

Iced tea: Includes canned, bottled cold or iced tea; added sub-category for presweetened with sugar or artificial sweeteners and kind of sweetener.

Hot tea: Added sub-category for green, herbal, and decaffeinated.

Non-dairy creamers added to coffee or tea: Referred to as whiteners and includes (cream, milk, or non-dairy creamer); sub-categories added for non-dairy creamer; cream or half and half; and milk.

Foods and beverage items added:

  • Sports drinks;
  • Energy drinks;
  • Berries: blueberries, raspberries, Saskatoon berries, or blackberries;
  • Pineapple;
  • Asparagus;
  • Winter squash;
  • Baked bean;
  • Flaxseeds;
  • Other seeds: sunflower or pumpkin seeds; and
  • Coffee drinks (latte, mocha, cappuccino or Frappuccino).

Foods eaten in the past month at least three times added:

  • Beef jerky;
  • Dark chocolate;
  • Dried curcumin, turmeric;
  • Dried oregano;
  • Fresh basil, cilantro or parsley;
  • Game meat;
  • Mangoes; and
  • Sushi.

Artificial sweetener list modified to include:

  • Equal, NutraSweet, or aspartame;
  • Sweet'N Low or cyclamate;
  • Splenda or sucralose;
  • Hermesetas or saccharin;
  • Herbal sweeteners like Stevia.

Multivitamins: Added subcategory to include prenatal type.

Calcium supplements or calcium containing antacids: Separated questions for calcium supplements and for calcium containing antacids; sub-category for extra strength antacid; sub-categories for calcium containing vitamin D, calcium containing magnesium and calcium containing zinc.

Added supplements: Iron; folic acid.

Added to single supplements taken more than once per week: B12; beta carotene; magnesium; Occu-vite/eye; potassium; vitamin A.

Added to herbal, botanical or other supplements taken more than once per week: Chondroitin; coenzyme Q-10; energy supplement; fish oil/omega-3s; flaxseed oil; peppermint; probiotics, red clover; soy supplement; sports supplement.

Food and Food Group Questions Deleted from C-DHQII:

Seasonality questions (summer and rest of the year): Soft drinks, beer, cooked cereal, and soups.

Wine: Wine coolers.

Chips: Sub-category for low-fat, or fat-free.

Cheese: Sub-category for fat-free cheese.

Cake: Sub-category for light, low-fat, or fat-free.

Cookies or brownies: Sub-category for light, low-fat, or fat free.

Sweet muffins or dessert breads: Sub-category for light, low-fat, or fat-free.

Margarine: Sub-category for regular-fat and fat-free.

Mayonnaise: Sub-category for regular-fat and fat-free.

Sour cream: Sub-category for regular-fat.

Cream cheese: Sub-category for regular.

Salad dressing: Sub-category for regular.

Foods eaten in the past month at least three times:

  • Milkshakes or ice-cream sodas;
  • oysters.


  • Fiber;
  • beta carotene;
  • vitamin A.

Single supplements taken more than once per week: Brewer's yeast; cod liver oil; coenzyme Q; fish oil; folic acid/folate; glucosamine; hydroxytryptophan (HTP); iron; niacin.

Herbal, botanical or other supplements taken more than once per week: Aloe vera; astragalus; bilberry; cascara sagrada; cat's claw; cayenne; dong kuai; goldenseal; grapeseed extract; kava kava; milk thistle; Siberian ginseng; valerian.