biostudies-literatureBredart AEuropean Organisation for Research and Treatment of Cancer1824https://www.ebi.ac.uk/biostudies/studies/S-EPMC12648786biostudies-literatureUnknown25(1)<h4>Background</h4>Advances in cancer care require ongoing monitoring of patient satisfaction using rigorous questionnaires. The EORTC Quality of Life Group has cross-culturally developed a patient satisfaction core questionnaire (PATSAT-C33) to be used in any hospital cancer care settings and an outpatient satisfaction module (OUT-PATSAT7) to address specific aspects of ambulatory care. This multi-center international prospective study aimed to validate the PATSAT-C33 and OUT-PATSAT7, including assessing its acceptability.<h4>Methods</h4>Patients (N = 690) affected by any cancer site or stage equally distributed by age and gender, were enrolled in in- and out-patient cancer settings from 20 institutions, 12 countries and 5 geographic/cultural areas. Among them, 675 completed the PATSAT-C3BMC cancerPhase IV international prospective validation of the EORTC patient satisfaction core questionnaire (EORTC PATSAT-C33) and outpatient module (EORTC OUT-PATSAT7).PMC12648786007-2018Amelie ARohde GIshiki HTurhal NSAlrjoub WIoannidis GSchmidt HVan Hemelrijck MFox LBultijnck RLehmann JConroy TKikawa YBredart AShamieh OArraras IJHarle AChalk TRoth EJUEORTC Quality of Life GroupMarchal FYoung TVassiliou VPinto EKop JLShayler SCostantini AfalsePhase IV international prospective validation of the EORTC patient satisfaction core questionnaire (EORTC PATSAT-C33) and outpatient module (EORTC OUT-PATSAT7).<h4>Background</h4>Advances in cancer care require ongoing monitoring of patient satisfaction using rigorous questionnaires. The EORTC Quality of Life Group has cross-culturally developed a patient satisfaction core questionnaire (PATSAT-C33) to be used in any hospital cancer care settings and an outpatient satisfaction module (OUT-PATSAT7) to address specific aspects of ambulatory care. This multi-center international prospective study aimed to validate the PATSAT-C33 and OUT-PATSAT7, including assessing its acceptability.<h4>Methods</h4>Patients (N = 690) affected by any cancer site or stage equally distributed by age and gender, were enrolled in in- and out-patient cancer settings from 20 institutions, 12 countries and 5 geographic/cultural areas. Among them, 675 completed the PATSAT-C32025-01-01T00:00:00Z2025 Nov2026-07-15T06:08:08.081Z2026-06-30T03:20:15.403ZS-EPMC126487864129942510.1186/s12885-025-15119-3