Patients admitted to hospital intensive care units need high-tech, high-cost, lifesaving care, but the professionals who tend to them may not always agree with the decisions regarding that care. A study conducted in Europe and Israel was completed to assess how healthcare workers viewed the "appropriateness" of care in ICUs. Inappropriate care was defined as care that clashes with the healthcare professional's beliefs or professional knowledge. Researchers surveyed 1,651 doctors and nurses. One-quarter of the nurses said they perceived some inappropriate care in at least one patient as did 32% of the doctors.