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Number and Percent of Online Grocery Store Web Sites With the Option to Filter Food Search Results by Various Nutrition Attributes (n = 12)
| Filter | % (n) |
|---|---|
| Gluten-free | 75 (9) |
| Fat content | 50 (6) |
| Sugar-free or no sugar added | 42 (5) |
| Sodium content | 17 (2) |
| Calorie content | 8 (1) |
| Trans fat content | 8 (1) |
| Cholesterol free | 8 (1) |
| Carbohydrate free | 8 (1) |
| Total protein | 8 (1) |
