NCT04385160

✓ Unanimous Initial: hospital Requery: other — The study involves follow-up of MPN patients diagnosed with COVID-19 in multiple centers, collecting data retrospectively and prospectively, indicating a mixture of settings including outpatient and potential hospital data collection, but no specific inpatient intervention delivery.

✓ Unanimous Initial: other Requery: other — This is an observational study collecting data on MPN patients with COVID-19 across multiple European centers without specifying a single intervention delivery location, making it a mixed/community-based data collection study.

✓ Unanimous Initial: hospital Requery: other — This is a multicenter observational study tracking outcomes across various settings (including outpatient and inpatient), rather than delivering a specific clinical intervention at a single fixed location.

✓ Unanimous Initial: no Requery: no — The trial focuses on thrombotic events and disease outcomes rather than specific symptoms or symptom scales.

✓ Unanimous Initial: no Requery: no — This observational study focuses on clinical outcomes like thrombotic events, pulmonary embolism, mortality, and treatment interventions, but does not measure specific symptoms using validated symptom assessment instruments.

✓ Unanimous Initial: yes

✓ Unanimous Initial: yes Requery: no — The clinical trial focuses on clinical outcomes, patient characteristics, and mortality rates without any specific mention of cost-effectiveness or healthcare utilization.

✓ Unanimous Initial: no Requery: no — The study measures clinical outcomes like thrombotic events, mortality, and disease progression without any cost-effectiveness analysis, healthcare utilization assessment, or cost-related measurements.

✓ Unanimous Initial: no Requery: no — The clinical outcomes focus on clinical events like thrombosis, mortality, and ICU admission without measuring healthcare utilization or economic costs.