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Objective To compare the effectiveness of nurse led telephonic palliative care versus specialty outpatient palliative care on quality of life, symptom burden, loneliness, and healthcare use, after attending the emergency department.Design Pragmatic, randomised clinical trial.Setting Emergency Medicine Palliative Care Access (EMPallA) randomised controlled trial enrolling participants from 18 emergency departments in 15 geographically diverse healthcare systems in nine US states, from 1 April 2018 to 30 June 2022.Participants Of 39 254 eligible patients, 1283 adults who visited the emergency department, were aged ≥50 years, who spoke English or Spanish, and had advanced cancer or end stage organ failure, were randomised to receive nurse led telephonic palliative care (n=639) or specialty outpatient palliative care (n=644).Interventions The nurse led telephonic palliative care arm consisted of weekly or biweekly calls over six months made by registered nurses certified in hospice and palliative care. For the specialty outpatient palliative care arm, patients had one visit each month for six months with a specialty trained hospice and palliative medicine provider.Main outcome measures The primary outcome was change in patient reported quality of life at six months, measured by the Functional Assessment of Cancer Therapy-General (FACT-G) questionnaire. Secondary outcomes were change in symptom burden and patient reported loneliness after six months, and healthcare use, measured as the number of emergency department revisits, inpatient days, and hospice use, from enrolment to 12 months.Results 639 patients were assigned to nurse telephonic services and 434 (68%) engaged in care until death, or until they required hospice services or graduated from the programme. For specialty outpatient palliative care, 644 patients were assigned and 344 (53%) attended one or more visits, with an average of 2.7 visits. The mean change in FACT-G scores over six months for the nurse telephonic arm (n=418) was 3.7 (95% confidence interval (CI) 2.3 to 5.1) points compared with 3.1 (1.6 to 4.6) for those in the specialty outpatient care arm (n=409). In the model including all patients who survived to six months (n=1090), the estimated difference in average change in quality of life was 0.71 (95% CI −1.19 to 2.61) points higher in the nurse led telephonic palliative care arm. The analysis did not show any clinically meaningful differences in the change in quality of life between the treatment arms. Also, no important differences between groups were found for secondary outcomes or in subgroup analyses.Conclusions The results of the study provided no clear evidence that nurse led telephonic palliative care improved quality of life, or any secondary outcomes, relative to specialty outpatient palliative care.Trial registration ClinicalTrials.gov NCT03325985.