Table 2 Questionnaires

Bristol stool form scale (BSFS)

Bowel habits

Patel et al. 2015 [14]

Rome III criteria

Functional gastrointestinal disorders

21-item Three Factor Eating Questionnaire (TFEQ-R21)

Eating behavior

Cappelleri et al. 2009 [15]

Questionnaire on Eating and Weight Patterns-Revised (QEWP-R)

Binge eating disorder

Borges et al. 2005 [16], Dorflinger et al. 2017 [17]

“Saltin Grimby” physical activity level scale

Physical activity

Grimby et al. 2015 [18]

RAND-36 item healty survey

Health-related quality of life

Krops et al. 2018 [19]

EuroQol five-dimensional questionnaire (EQ-5D)

Health-related quality of life

Sullivan et al. 2016 [20]

Becks Anxiety Inventory (BAI)

Symptoms of anxiety

Steer et al. 1997 [21]

Patient Health Questionnaire-9 (PHQ-9)

Symptoms of depression

Kroenke et al. 2001 [22]

ADHD Self Reporting Scale (ASRS)

ADHD screening

Kessler et al. 2005 [23]

Wender Utah Rating Scale (WURS)

Distinguish ADHD from other psychological disorders

Ward et al. 1993 [24]

Alcohol Use Disorders Identification Test (AUDIT)

Alcohol consumption

Babor et al. 2001 [25]

Drug Use Disorders Identification Test (DUDIT)

Drug related-problems

Berman et al. 2003 [26], Hildebrand et al. 2015 [27]