Table 5 Rasch analyses of the 13 modified YFAS2 (mYFAS2) symptoms

3.I ate to the point where I felt physically ill

− 0.22

0.04

1.38

6.0

1.87

9.0

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

− 0.09

0.04

0.98

− 0.2

1.11

1.7

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

0.17

0.04

0.84

− 2.8

0.77

− 3.5

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

− 0.41

0.04

1.38

6.2

1.78

9.0

16. My eating behavior caused me a lot of distress.

− 0.03

0.04

0.92

− 1.3

0.92

− 1.1

17. 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.

0.01

0.04

0.75

− 4.7

0.76

− 3.8

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

0.32

0.04

0.78

− 3.9

0.63

− 5.8

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

0.04

0.04

1.02

0.3

1.03

0.4

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

0.06

0.04

0.89

− 2.0

0.80

− 3.0

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

0.05

0.04

0.75

− 4.6

0.88

− 1.7

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

− 0.33

0.04

1.45

7.2

1.76

9.0

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

0.32

0.04

0.88

− 2.1

0.67

− 5.0

35. My friends or family were worried about how much I overate.

0.11

0.04

1.24

3.8

1.30

4.0