Organization Full Program · Contributors · Organizations · Search Program · Flagged · Happening NowMore…Search ProgramFlaggedHappening NowPA ConsultingContributorsHasan AliLimor HochbergClara VamvulescuPresentationsOral PresentationsHow Many Users Do We Really Need? Analyzing the Impact of Key Characteristics on Usability Test Performance and Sample Size Selection of HF Validation for Combination ProductsMedical and Drug Delivery Devices (MDD)