Table 1.

Item abbreviations

Abbreviation	EDE-Q item(s)
Restraint1	Have you been deliberately trying to limit the amount of food you eat to influence your shape or weight? Have you tried to avoid eating any foods which you like in order to influence your shape weight? Have you tried to follow definite rules regarding your eating in order to influence your shape or weight; for example, a calorie limit, a set amount of food, or rules about what or when you should eat?
Fast	Have you gone for long periods of time (8 hours or more) without eating anything in order to influence your shape weight?
Empty	Have you wanted your stomach to be empty?
FoodConc	Has thinking about food or its calorie content made it much more difficult to concentrate on thing you are interested in; for example, read, watch TV, or follow a conversation?
FearControl	Have you been afraid of losing control over eating?
Secret	Have you eaten in secret? (Do not count binges.)
Flat	Have you definitely wanted your stomach to be flat?
SpWtConc	Has thinking about shape or weight made it more difficult to concentrate on things you are interested in; for example read, watch TV, or follow a conversation?
FearGain	Have you had a definite fear that you might gain weight or become fat?
Fat	Have you felt fat?
Desire	Have you had a strong desire to lose weight?
Guilt	On what proportion of times that you have eaten have you felt guilty because the effect on your shape or weight? (Do not count binges.)
OBE	During how many of these episodes of overeating did you have a sense of having lost control over your eating? (Objective binge episode frequency)
SBE	Have you had other episodes of eating in which you have had a sense of having lost control and eaten too much, but have not eaten an unusually large amount of food given the circumstances? How many such episodes have you had over the past four weeks? (Subjective binge episode frequency)
Vomit	Over the past four weeks have you made yourself sick (vomit) as a means of controlling your shape or weight? How many such episodes have you had over the past four weeks?
Lax	Have you taken laxatives as a means of controlling your shape or weight? How many times have you done this over the past four weeks?
Exer	Have you exercised hard as a means of controlling your shape or weight? How many times have you done this over the past four weeks?
Overval1	Has your weight influenced how you think about (judge) yourself as a person? Has your shape influenced how you think about (judge) yourself as a person?
Dissatis1	How dissatisfied have you felt about your weight? How dissatisfied have you felt about your shape?
SelfWeigh	How much would it upset you if you had to weigh yourself once a week for the next four weeks?
OthersEat	How concerned have you been about other people seeing you eat?
DiscOwn	How uncomfortable have you felt seeing your body; for example, in the mirror, in shop window reflections, while undressing or taking a bath or shower?
DiscOthers	How uncomfortable have you felt about others seeing your body; for example, in communal changing rooms, when swimming or wearing tight clothes?
	QIDS-SR item(s)
Sleep1	Difficulties falling asleep Waking up during the night Waking up too early sleeping too much
Sad	Feeling sad
Conc	(Difficulties with) concentration/decision-making
SelfEst	(Negative) view of myself
Suic	Thoughts of death or suicide
Anhed	(Lack of) general interest
Energy	(Low) energy level
Slowed	Feeling slowed down
Restless	Feeling restless
	STAI-T item
Nervous	I feel nervous and restless
Overwhelm	I feel that difficulties are piling up so that I cannot overcome them (overwhelmed)
Worry	I worry too much over something that really doesn’t matter
Decision	I make decisions easily
Intrusive	Some unimportant thought runs through my mind and bothers me (intrusive thoughts)
Ruminat	I get in a state of tension or turmoil as I think over my recent concerns and interests (rumination)

Note. EDE-Q=Eating Disorder Examination-Questionnaire; QIDS-SR=Quick Inventory of Depressive Symptomatology Self-Report; STAI-T=State Trait Anxiety Inventory trait subscale.

¹Calculated as the mean of the specified items.