title: Evaluation of psychological aspects among subtypes of irritable bowel syndrome.
abstract: BACKGROUND
  While some studies have found disparities between subtypes of irritable bowel syndrome (IBS), others did not found such differences.
  
  
  OBJECTIVE
  This study aimed to investigate whether there are differences in psychological features between the subtypes of IBS.
  
  
  METHODS
  A cross-sectional study was performed on all consecutive outpatients IBS diagnosed (from Oct. 2010 to Oct. 2011) in Taleghani Hospital gastroenterology clinic, Tehran, Iran.
  
  
  METHODS
  A total of 153 consecutively diagnosed IBS patients (using Rome III criteria); including 80 constipation-predominant (IBS-C), 22 diarrhea-predominant (IBS-D), and 51 mixed IBS (IBS-M) were asked to complete the Symptom Checklist 90 Revised (SCL-90-R).
  
  
  METHODS
  Pearson's chi-square test was used to compare nominal variables. One-way ANOVA was used to compare continuous variables.
  
  
  RESULTS
  Although IBS-C patients were more suffered from psychiatric disorders, there were no statistical differences between mean score of IBS-C, IBS-D, and IBS-M patients regarding to all of SCL-90-R subscales and three global indices including Global Severity Index (GSI), Positive Symptom Distress Index (PSDI) and Positive Symptom Total (PST) (P<0.05).
  
  
  CONCLUSIONS
  Our finding showed that there are no different symptomatic profiles between IBS subtypes.
authors.affiliation: Department of Psychiatry, University of Social Welfare and Rehabilitation Science, Tehran, Iran.
authors.forename: Neda
authors.initials: N
authors.lastname: Farzaneh
authors.forename: Mehdi
authors.initials: M
authors.lastname: Ghobakhlou
authors.forename: Bijan
authors.initials: B
authors.lastname: Moghimi-Dehkordi
authors.forename: Nosrotollah
authors.initials: N
authors.lastname: Naderi
authors.forename: Farbod
authors.initials: F
authors.lastname: Fadai