CESAR was contracted by the London School of Economics and Wits University Centre for Health Policy (LSE/CHP) to conduct a survey using undercover fieldworkers as standardised patients, similar to mystery shoppers, to collect data from 606 healthcare providers in public and private facilities in South Africa. The aim of the study was to determine antibiotic prescribing behaviour and the quality of care patients receive in primary health care settings. SurveyCTO software was employed for electronic data collection. The survey was intensive and required high level of data quality, necessitating the submission of daily fieldwork report to the client.