title: Cognitive behaviour therapy for specific phobia of vomiting (Emetophobia): A pilot randomized controlled trial.
abstract: This is the first randomised controlled trial to evaluate a protocol for cognitive behaviour therapy (CBT) for a Specific Phobia of Vomiting (SPOV) compared with a wait list and to use assessment scales that are specific for a SPOV.
  
  
  
  24 participants (23 women and 1 man) were randomly allocated to either 12 sessions of CBT or a wait list.
  
  
  
  At the end of the treatment, CBT was significantly more efficacious than the wait list with a large effect size (Cohen's d=1.53) on the Specific Phobia of Vomiting Inventory between the two groups after 12 sessions. Six (50%) of the participants receiving CBT achieved clinically significant change compared to 2 (16%) participants in the wait list group. Eight (58.3%) participants receiving CBT achieved reliable improvement compared to 2 (16%) participants in the wait list group.
  
  
  
  A SPOV is a condition treatable by CBT but further developments are required to increase efficacy.
authors.affiliation: Argosy University, San Diego Campus, College of Behavioral Sciences, CA, USA. Electronic address: llrwalker@sbcglobal.net.
authors.forename: Lori
authors.initials: L
authors.lastname: Riddle-Walker
authors.affiliation: Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: David
authors.initials: D
authors.lastname: Veale
authors.affiliation: Private Practice, Carlsbad, CA, USA.
authors.forename: Cynthia
authors.initials: C
authors.lastname: Chapman
authors.affiliation: Private Practice, San Diego, CA, USA.
authors.forename: Frank
authors.initials: F
authors.lastname: Ogle
authors.affiliation: Argosy University, San Diego Campus, College of Behavioral Sciences, CA, USA.
authors.forename: Donna
authors.initials: D
authors.lastname: Rosko
authors.affiliation: San Diego State University, Department of Psychology CA, USA.
authors.forename: Sadia
authors.initials: S
authors.lastname: Najmi
authors.affiliation: Talking Feather Communications, Surprise, AZ, USA.
authors.forename: Lana M
authors.initials: LM
authors.lastname: Walker
authors.affiliation: Palomar Community College, San Marcos, CA, USA.
authors.forename: Pete
authors.initials: P
authors.lastname: Maceachern
authors.affiliation: Argosy University, San Diego Campus, College of Behavioral Sciences, CA, USA.
authors.forename: Thomas
authors.initials: T
authors.lastname: Hicks
mesh_terms: D000293:Adolescent; D000328:Adult; D015928:Cognitive Behavioral Therapy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010698:Phobic Disorders / Q000523:psychology / Q000628:therapy*; D010865:Pilot Projects; D016896:Treatment Outcome; D014839:Vomiting / Q000523:psychology*; D055815:Young Adult
keywords: Cognitive behaviour therapy; Emetophobia; Exposure; Randomised controlled trial; Specific phobia; Vomiting