------------------- GENERAL INFORMATION ------------------- Funder: The Division of AIDS, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services, under contract Nos. HHSN272201000045C and HHSN272201700061C entitled “External Quality Assurance Program Oversight Laboratory (EQAPOL)” and grant no. IAA-Y1-HB-5026-01 entitled “Global HIV panel project”. Associated Publication (Pending): Sheila Keating, Wes Rountree, Eduard Grebe, Andrea L. Pappas, Mars Stone, Dylan Hampton, Christopher A. Todd, Marek S. Poniewierski, Ana Sanchez, Cassandra G. Porth, Thomas N. Denny, Michael P. Busch (2019). Development of an international external quality assurance program for HIV-1 incidence using the Limiting Antigen Avidity assay. Submitted to PLOS ONE. -------------------- DATA OVERVIEW -------------------- There are two .csv files one for the LAg calibrator data (LAg_Calibrator_Values.csv) and one for the LAg OD/ODn values (LAg_OD_ODn_Values.csv) LAg_Calibrator_Values.csv contains the following variables: EP numeric value for External Proficiency number SITE_NUMBER character value for the site KIT_TYPE character value for kit type (Sedia or Maxim) INITIAL_CONFIRMATORY character value for calibrator type (Initial or Confirmatory) CALIBRATOR numeric value for the calibrator LAg_OD_ODn_Values.csv contains the following variables: EP numeric value for External Proficiency number SITE_NUMBER character value for the site SAMPLE_GID character value for the blinded sample in each EP KIT_TYPE character value for kit type (Sedia or Maxim) CONFIRMATORY_REPLICATE character value for the replicate number, NA if not a replicate SEROLOGY character value for the serology (pos/neg) N/A if not performed CLASSIFICATION character value for the sample status (Recent, Long Term, Negative) SAMPLE numeric value for the sample number in the EP DHVI_PubID character value for the blinded ID od_value numeric optical density value odn_value numeric normalized optical density value These two data files provided represent the data used for analyses performed in the paper mentioned above. See the statistical analyses section for details. Data were uploaded to the EQAPOL website by labs participating in the EPs. The paper mentioned above provides other relevant information regarding the EQAPOL Limiting Antigen (LAg) Incidence Assay.