title: Challenges with using estimates when calculating ART need among adults in South Africa.
abstract: BACKGROUND
  The Foundation for Professional Development (FPD) collects information annually on HIV/AIDS service provision and estimates service needs in the City of Tshwane Metropolitan Municipality (CTMM).
  
  
  METHODS
  Antiretroviral therapy (ART) data from the Department of Health and Statistics South Africa (SSA) mid-year population estimates were used to approximate the ART need among adults in the CTMM.
  
  
  RESULTS
  According to SSA data, ART need decreased dramatically from 2010 to 2011 and was lower than the number of adults receiving ART. Although the noted difference was probably due to changes in the calculations by SSA, no detailed or confirmed explanation could be offered.
  
  
  CONCLUSIONS
  We provide a constructive contribution to the discussion about the use of model-derived estimates of ART need.
authors.affiliation: Epi Result, Louis Trichardt, South Africa. annette.gerritsen@epiresult.com
authors.forename: Annette A M
authors.initials: AA
authors.lastname: Gerritsen
authors.forename: Janine S
authors.initials: JS
authors.lastname: Mitchell
authors.forename: Suzanne M
authors.initials: SM
authors.lastname: Johnson
authors.forename: Wim
authors.initials: W
authors.lastname: Delva
mesh_terms: D000293:Adolescent; D000328:Adult; D044966:Anti-Retroviral Agents / Q000627:therapeutic use*; D015658:HIV Infections / Q000188:drug therapy / Q000453:epidemiology*; D019538:Health Care Surveys; D006301:Health Services Needs and Demand / Q000706:statistics & numerical data*; D006801:Humans; D018803:Models, Economic; D013019:South Africa / Q000453:epidemiology; D055815:Young Adult
chemical_list: D044966:Anti-Retroviral Agents