Preliminary validation of the pica, ARFID and rumination disorder interview ARFID questionnaire (PARDI-AR-Q)

Rachel Bryant-Waugh^{1

2}, Casey M Stern³, Melissa J Dreier^{3

4}, Nadia Micali^{5

6

7}, Lucy J Cooke⁸, Megan C Kuhnle^{3

9}, Helen Burton Murray^{3

10

11}, Shirley B Wang¹², Lauren Breithaupt^{3

11

13}, Kendra R Becker^{3

11}, Madhusmita Misra^{11

14}, Elizabeth A Lawson^{11

14}, Kamryn T Eddy^{3

11}, Jennifer J Thomas^{15

16}

Affiliations

¹ South London and Maudsley NHS Foundation Trust, London, UK.
² Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, UK.
³ Eating Disorders Clinical and Research Program, Massachusetts General Hospital, 2 Longfellow Place, Suite 200, Boston, MA, 02114, USA.
⁴ Department of Psychology, Rutgers University, Piscataway, USA.
⁵ Department of Psychiatry, University of Geneva, Geneva, Switzerland.
⁶ Department of Pediatrics, Gynecology and Obstetrics, University of Geneva, Geneva, Switzerland.
⁷ Eating Disorders Research Unit, Mental Health Center Ballerup, Mental Health Services of the Capital Region of Denmark, Ballerup, Denmark.
⁸ Great Ormond Street Hospital for Children NHS Trust, London, UK.
⁹ Department of Epidemiology, Boston University, Boston, USA.
¹⁰ Center for Neurointestinal Health, Massachusetts General Hospital, Boston, USA.
¹¹ Harvard Medical School, Boston, USA.
¹² Department of Psychology, Harvard University, Cambridge, USA.
¹³ Department of Psychiatry, Athinoula A. Martinos Center for Biomedical Imaging, Boston, USA.
¹⁴ Neuroendocrine Unit, Massachusetts General Hospital, Boston, USA.
¹⁵ Eating Disorders Clinical and Research Program, Massachusetts General Hospital, 2 Longfellow Place, Suite 200, Boston, MA, 02114, USA. jjthomas@mgh.harvard.edu.
¹⁶ Harvard Medical School, Boston, USA. jjthomas@mgh.harvard.edu.

PMID: 36419081
PMCID: PMC9682666
DOI: 10.1186/s40337-022-00706-7

Preliminary validation of the pica, ARFID and rumination disorder interview ARFID questionnaire (PARDI-AR-Q)

Rachel Bryant-Waugh et al. J Eat Disord. 2022.

. 2022 Nov 22;10(1):179.

doi: 10.1186/s40337-022-00706-7.

Authors

Affiliations

¹ South London and Maudsley NHS Foundation Trust, London, UK.
² Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, UK.
³ Eating Disorders Clinical and Research Program, Massachusetts General Hospital, 2 Longfellow Place, Suite 200, Boston, MA, 02114, USA.
⁴ Department of Psychology, Rutgers University, Piscataway, USA.
⁵ Department of Psychiatry, University of Geneva, Geneva, Switzerland.
⁶ Department of Pediatrics, Gynecology and Obstetrics, University of Geneva, Geneva, Switzerland.
⁷ Eating Disorders Research Unit, Mental Health Center Ballerup, Mental Health Services of the Capital Region of Denmark, Ballerup, Denmark.
⁸ Great Ormond Street Hospital for Children NHS Trust, London, UK.
⁹ Department of Epidemiology, Boston University, Boston, USA.
¹⁰ Center for Neurointestinal Health, Massachusetts General Hospital, Boston, USA.
¹¹ Harvard Medical School, Boston, USA.
¹² Department of Psychology, Harvard University, Cambridge, USA.
¹³ Department of Psychiatry, Athinoula A. Martinos Center for Biomedical Imaging, Boston, USA.
¹⁴ Neuroendocrine Unit, Massachusetts General Hospital, Boston, USA.
¹⁵ Eating Disorders Clinical and Research Program, Massachusetts General Hospital, 2 Longfellow Place, Suite 200, Boston, MA, 02114, USA. jjthomas@mgh.harvard.edu.
¹⁶ Harvard Medical School, Boston, USA. jjthomas@mgh.harvard.edu.

PMID: 36419081
PMCID: PMC9682666
DOI: 10.1186/s40337-022-00706-7

Abstract

Background: The Pica, ARFID, and Rumination Disorder Interview (PARDI) is a structured interview that can be used to determine diagnosis, presenting characteristics, and severity across three disorders, including avoidant/restrictive food intake disorder (ARFID). The purpose of this study was to evaluate the psychometric properties of a questionnaire focused specifically on ARFID (PARDI-AR-Q), which has the potential to provide related information with less participant burden.

Methods: Adolescents and adults (n = 71, ages 14-40 years) with ARFID (n = 42) and healthy control participants (HC, n = 29) completed the PARDI-AR-Q and other measures. A subset of the ARFID group (n = 27) also completed the PARDI interview.

Results: An exploratory factor analysis of proposed subscale items identified three factors corresponding to the ARFID phenotypes of avoidance based on the sensory characteristics of food, lack of interest in eating or food, and concern about aversive consequences of eating. Further analyses supported the internal consistency and convergent validity of the PARDI-AR-Q subscales, and subscale ratings on the questionnaire showed large and significant correlations (all p-values < 0.001; r's ranging from 0.48 to 0.77) with the corresponding subscales on the interview. The ARFID group scored significantly higher than HC on all subscales. Furthermore, 90% of the ARFID group scored positive on the PARDI-AR-Q diagnostic algorithm while 93% of the HC scored negative.

Conclusions: Though replication in larger and more diverse samples is needed, findings provide early support for the validity of the PARDI-AR-Q as a self-report measure for possible ARFID in clinical or research settings.

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Conflict of interest statement

Drs. Becker, Eddy, and Thomas receive royalties from Cambridge University Press for the sale of their books on ARFID. Dr. Thomas has received an honorarium for her work as Associate Editor for the International Journal of Eating Disorders. Dr. Rachel Bryant-Waugh receives royalties from Taylor and Francis for the sale of her books on ARFID. Dr. Breithaupt is a consultant for Otsuka Pharmaceuticals. Dr. Misra has consulted for Abbvie and Sanofi and served on the scientific advisory board for Abbive and Ipsen. Dr. Micali received an honorarium for her work as Associate Editor for the European Eating Disorders Review.

References

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Preliminary validation of the pica, ARFID and rumination disorder interview ARFID questionnaire (PARDI-AR-Q)

Affiliations

Preliminary validation of the pica, ARFID and rumination disorder interview ARFID questionnaire (PARDI-AR-Q)

Authors

Affiliations

Abstract

Conflict of interest statement

References

Grants and funding

LinkOut - more resources

Full Text Sources

Research Materials