Table 1 Description of the 13 items in mPYFAS 2.0 with original 8-point Likert Scale and transformed scale values (polytomous and dichotomous)

1

I ate to the point where I felt physically ill

0 = Never to 7 = Daily

(0–3 = 0;4–7 = 1)

Amout

2

I spent a lot of time feeling sluggish or tired from overeating

0 = Never to 7 = Daily

(0–4 = 0;5–7 = 1)

Time

3

I avoided work, school or social activities because I was afraid I would overeat there

0 = Never to 7 = Daily

(0–1 = 0;2–7 = 1)

Activities

4

If I had emotional problems because I hadn’t eaten certain foods, I would eat those foods to feel better

0 = Never to 7 = Daily

(0–3 = 0;4–7 = 1)

Withdrawal

5

My eating behavior caused me a lot of distress

0 = Never to 7 = Daily

(0–4 = 0;5–7 = 1)

Impairment

6

I had significant problems in my life because of food and eating. These may have been problems with my daily routine, work, school, friends, family, or health

0 = Never to 7 = Daily

(0–4 = 0;5–7 = 1)

Impairment

7

My overeating got in the way of me taking care of my family or doing household chores

0 = Never to 7 = Daily

(0–1 = 0;2–7 = 1)

Obligations

8

I kept eating in the same way even though my eating caused emotional problems

0 = Never to 7 = Daily

(0–3 = 0;4–7 = 1)

Consequences

9

Eating the same amount of food did not give me as much enjoyment as it used to

0 = Never to 7 = Daily

(0–4 = 0;5–7 = 1)

Tolerance

10

I had such strong urges to eat certain foods that I couldn’t think of anything else

0 = Never to 7 = Daily

(0–3 = 0;4–7 = 1)

Craving

11

I tried and failed to cut down on or stop eating certain foods

0 = Never to 7 = Daily

(0–4 = 0;5–7 = 1)

Attempts

12

I was so distracted by eating that I could have been hurt (e.g., when driving a car, crossing the street, operating machinery)

0 = Never to 7 = Daily

(0–1 = 0;2–7 = 1)

Situations

13

My friends or family were worried about how much I overate

0 = Never to 7 = Daily

(0–1 = 0;2–7 = 1)

Problems