This file contains data associated with a user study that was conducted to evaluate a multi-lingual and multi-terminology query suggestion system. It contains, on separate worksheets, information regarding the information situations; retrieval systems; URL of the retrieved documents (9598) with the respective information system, retrieval system and rank position; criteria for the assessment of medical accuracy of each information situation. The assessment criteria were defined by a medical jury considering the information available on UptoDate® and "Harrison's principles of internal medicine (18th ed.)". Data used in Carla Teixeira Lopes, Dagmara Paiva, Cristina Ribeiro, 'Effects of language and terminology of query suggestions on medical accuracy considering different user characteristics', J Am Soc Inf Sci Tec, 2016. More details regarding the user study on this paper.