title: The factors associated with tuberculosis recurrence in the northwest and west of iran.
abstract: BACKGROUND
  Identifying the factors associated with the recurrence of Mycobacterium tuberculosis (MTB) can help in tuberculosis disease prevention and reducing the burden on the health care system. This study was designed to identify the factors associated with recurrence in MTB patients in five border provinces of Iran.
  
  
  METHODS
  In a cross-sectional study (2010 to 2012), clinical, economic, and social factors associated with the recurrence of tuberculosis were evaluated. The data were collected by a questionnaire and survey of medical records. Simple and multiple logistic regression analyses were performed using SPSS V.18.
  
  
  RESULTS
  A total of 300 patients with an average age of 51.9 years (SD 24.2) were randomly selected. Overall, 7.2% of the patients were diagnosed with a recurrence of tuberculosis. Sixty-four percent (n = 151) of the patients were in a low-income class. The migration from a village to a city (OR = 8.4) and weight loss (OR = 1.5) were significantly associated with an increased chance of recurrence.
  
  
  CONCLUSIONS
  In this study, the selected provinces of Iran had moderate rates of tuberculosis recurrence in comparison to global reports. Further studies on the relationship of both weight loss and the immigration from a village to a city with tuberculosis recurrence are necessary.
authors.affiliation: Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Science, Daneshgah Street, Postal code 51665118, Tabriz, Iran.
authors.forename: Leyla
authors.initials: L
authors.lastname: Sahebi
authors.affiliation: Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Science, Daneshgah Street, Postal code 51665118, Tabriz, Iran.
authors.forename: Khalil
authors.initials: K
authors.lastname: Ansarin
authors.affiliation: Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Science, Daneshgah Street, Postal code 51665118, Tabriz, Iran.
authors.forename: Seyyedi
authors.initials: S
authors.lastname: Maryam
authors.affiliation: Department of Hematology, Tabriz branch, Islamic Azad University of Tabriz, Daneshgah Street, Postal code 51665118, Tabriz, Iran.
authors.forename: Amir
authors.initials: A
authors.lastname: Monfaredan
authors.affiliation: Physical Medicine and Rehabilitation Research Center, Tabriz University of Medical Science Daneshgah Street, Postal code 51665118, Tabriz, Iran.
authors.forename: Hamed
authors.initials: H
authors.lastname: Sabbgh Jadid
keywords: epidemiology; mycobacterium tuberculosis; recurrence