Highlights ■ Performance was <70% in 10 of the 33 items. ■ Lowest performance domains were Oncologic Pain and Opioid Side Effects. ■ Residents in clinical specialties outperformed those in surgical or mixed specialties. ■ Residents with ≥3 years of training outperformed those on their first 2 years. ABSTRACT Objective: To translate, cross-culturally adapt, and validate the Palliative Care Knowledge Questionnaire for PEACE (PEACE-Q) in Brazilian Portuguese. Methods: This study followed five steps: translation, back-translation, cultural adaptation, pre-test, and test-retest. […]