title: Incidence and predictors of inadequate bowel preparation before elective colonoscopy in Thai patients.
abstract: BACKGROUND
  The incidence of inadequate bowel preparation before elective colonoscopy in this region has never been studied.
  
  
  METHODS
  The authors prospectively described the incidence and factors related to inadequate bowel preparation in Thammasat university hospital. Bowel preparation quality was accessed by using Aronchick scale. Factors associated with inadequate bowel preparation were also recorded.
  
  
  RESULTS
  Two hundred patients undergoing elective outpatient colonoscopy were enrolled. Inadequate and fair bowel preparation was documented in 9 and 43%, respectively. Factors associated with inadequate bowel preparation were incomplete cleansing agent ingestion (odds ratio 7.7; 95%CI 1.62-36.64) and patient's unrecognization of vegetable avoidance (odds ratio 3.26; 95%CI 1.14-9.28).
  
  
  CONCLUSIONS
  Compared with previous reported, inadequate bowel preparation was seen less in our study, however, more patients with fair bowel preparation was documented. Further study aiming at investigating the type and amount of fiber contained in diet before elective colonoscopy should be commenced.
authors.affiliation: GIUnit, Department of Medicine, Faculty of Medicine, Thammasat University Hospital, Pathumthani, Thailand E-mail : Patommatat@gmail.com.
authors.forename: Patommatat
authors.initials: P
authors.lastname: Bhanthumkomol
authors.forename: Sith
authors.initials: S
authors.lastname: Siramolpiwat
authors.forename: Ratha-Korn
authors.initials: RK
authors.lastname: Vilaichone
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003113:Colonoscopy / Q000592:standards*; D017558:Elective Surgical Procedures / Q000592:standards*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010349:Patient Compliance; D011092:Polyethylene Glycols / Q000008:administration & dosage*; D011379:Prognosis; D011446:Prospective Studies; D013785:Thailand; D055815:Young Adult
chemical_list: D011092:Polyethylene Glycols