The health preoccupation diagnostic interview: inter-rater reliability of a structured interview for diagnostic assessment of DSM-5 somatic symptom disorder and illness anxiety disorder.
Somatic symptom disorder (SSD) and illness anxiety disorder (IAD) are two new diagnoses introduced in the DSM-5. There is a need for reliable instruments to facilitate the assessment of these disorders. We therefore developed a structured diagnostic interview, the Health Preoccupation Diagnostic Interview (HPDI), which we hypothesized would reliably differentiate between SSD, IAD, and no diagnosis. Persons with clinically significant health anxiety (n = 52) and healthy controls (n = 52) were interviewed using the HPDI. Diagnoses were then compared with those made by an independent assessor, who listened to audio recordings of the interviews. Ratings generally indicated moderate to almost perfect inter-rater agreement, as illustrated by an overall Cohen's κ of .85. Disagreements primarily concerned (a) the severity of somatic symptoms, (b) the differential diagnosis of panic disorder, and (c) SSD specifiers. We conclude that the HPDI can be used to reliably diagnose DSM-5 SSD and IAD.
a Division of Psychology, Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.
Erland
E
Axelsson
a Division of Psychology, Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.
Erik
E
Andersson
a Division of Psychology, Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.
Brjánn
B
Ljótsson
b Capio Psykiatri Nacka , Stockholm , Sweden.
Daniel
D
Wallhed Finn
a Division of Psychology, Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.|c Osher Center for Integrative Medicine, Department of Clinical Neuroscience , Karolinska Institutet , Stockholm , Sweden.
Erik
E
Hedman
D000293:Adolescent; D000328:Adult; D000368:Aged; D001008:Anxiety Disorders / Q000175:diagnosis*; D016022:Case-Control Studies; D003937:Diagnosis, Differential; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D007406:Interview, Psychological / Q000592:standards*; D008297:Male; D000071896:Medically Unexplained Symptoms; D008875:Middle Aged; D015588:Observer Variation; D016584:Panic Disorder / Q000175:diagnosis; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D013001:Somatoform Disorders / Q000175:diagnosis*; D055815:Young Adult
Health anxiety; illness anxiety disorder; reliability; somatic symptom disorder; somatization