Table 1 Self-report questionnaire^a

#1 Cancer treatment side effects and their impact on eating and drinking

 #1.1

Describe the side effects induced by the treatment: nausea, swallowing difficulties, mouth ulcers, constipation, dry mouth, chewing difficulties, persistent taste, diarrhea, fatigue, hypersensitivity to odors, vomiting, and/or others.

 #1.2

Do these side effects disturb your eating and drinking? Yes or no.

If yes, describe how: appetite loss, mouth and esophagus pain, fast fullness, food aversion, digestion pain, and/or other.

 #1.3

How long do these difficulties persist after treatment?

#2 Cooking skills

 #2.1

Are you able to cook as soon as you come back home? Yes, no or only after n days.

 #2.2

Are you helped by: a parent/family member/relative, home delivery, ready-to-eat products, and/or others?

#3 Dietary behavior

 #3.1

What meals and/or snacks do you currently have in one day? Breakfast, light morning meal, lunch, light mid-afternoon meal, dinner, and/or other.

 #3.2

What is currently your favorite meal? Breakfast, light morning meal, lunch, light mid-afternoon meal, dinner, and/or no preference.

 #3.3

What portion would you eat if a full meal was served to you in the hospital or at home? For the first course, for the second course, for the cheese and/or yogurt, for the dessert, and/or for the snack, would you eat 0, 1/4, 1/2, 3/4, 1 or 2 portions?

#4 Food preferences

 #4.1

What do you currently prefer to eat: salty, sweet, hot, cold, into pieces, minced, blended, creamy, liquid, and/or other?

 #4.2

Since the beginning of the treatment, what food, salty or sweet courses do you prefer to eat?

 #4.3

Specify for what foods you have developed nausea or an aversion.

 #4.4

What are the most important food attributes that stimulate your appetite (in descending order of importance from 1 to 7): taste, aspect, odor, consistency, quantity, presentation, and/or other?

 #4.5

What type of snacks do you prefer to eat: salty, sweet, creamy desserts, ice creams, biscuits, milky beverages, others beverages, and/or others?

#5 Nutrient-enriched foods

 #5.1

Have you already experimented with enriched or fortified foods? Yes or no.

If yes, in what context have you experimented with it: in the hospital, at home, and/or, other?

If yes, please specify: blended courses, creamy desserts, milky beverages, non-milky beverages, and/or others?

If yes, are you satisfied with the products: very satisfied, satisfied or not satisfied? Please specify why.

#6 Preferences for a new dietary product

 #6.1

If new dietary products were developed, what advantages would motivate you to purchase them (in descending order of importance from 1 to 9): taste, sale price, ready-to-eat, dietary counseling, medical prescription, mode of preservation, nutritional value, partial reimbursement, or others?

 #6.2

Where do you prefer to find these new products: pharmacies, dietary shops, supermarkets, and/or home delivery?

 #6.3

What type of new products would you prefer: frozen, canned, fresh or other?