title: Patterns of attendance in methadone maintenance treatment program in Yunnan Province, China.
abstract: OBJECTIVE
  To describe the patterns of patients' attendance over the first three quarters of a year under methadone maintenance treatment (MMT) clinics in Yunnan Province, China.
  
  
  METHODS
  Data were obtained from drug abuse treatment databases from five MMT clinics in Yunnan Province. Patients registered between April 2007 and December 2007 were included in the analysis. The study period was divided into three phases consisting of 3 months each. Logistic regression was used to predict factors determining whether the patients attended the clinic on each day with repetition of the patients taken into account.
  
  
  RESULTS
  The median number of days attending the clinics was 61 in the total treatment period, and the likelihood of a patient attending the clinic in the second and third phases was significantly less [odds ratio (OR) = .44 and .30, 95% confidence interval (CI) = .40-.49 and .26-.34] compared with the first phase. The predictors for attendance at clinic were being unmarried (OR = .63, 95% CI = .49-.82), self-employed (OR = .18, 95% CI = .11-.28), having a history of syringe sharing (OR = .67, 95% CI = .48-.92), and having been in a detoxification program (OR = 1.59, 95% CI = 1.09-2.33).
  
  
  CONCLUSIONS
  Heroin users attended MMT programs irregularly and their periods of attendance significantly declined by duration of the time they stayed in the treatment program. Additional interventions should be employed to help patients adhere to this long-term treatment program.
authors.affiliation: Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand.
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Che
authors.forename: Sawitri
authors.initials: S
authors.lastname: Assanangkornchai
authors.forename: Edward
authors.initials: E
authors.lastname: McNeil
authors.forename: Jianhua
authors.initials: J
authors.lastname: Li
authors.forename: Jing
authors.initials: J
authors.lastname: You
authors.forename: Virasakdi
authors.initials: V
authors.lastname: Chongsuvivatwong
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000554:Ambulatory Care Facilities; D002681:China; D005260:Female; D005500:Follow-Up Studies; D006556:Heroin Dependence / Q000188:drug therapy* / Q000534:rehabilitation; D006801:Humans; D016015:Logistic Models; D008297:Male; D008691:Methadone / Q000627:therapeutic use*; D008875:Middle Aged; D058850:Opiate Substitution Treatment; D010349:Patient Compliance / Q000706:statistics & numerical data*; D010352:Patient Dropouts / Q000706:statistics & numerical data*; D012189:Retrospective Studies; D012959:Socioeconomic Factors; D016320:Substance Abuse Treatment Centers / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D055815:Young Adult
chemical_list: D008691:Methadone