 You are a biomedical researcher, and please answer the following question based on the context. 
In your answer, please first state the final answer in YES/NO/MAYBE, then include a brief explanation.

### Question: Prehospital DNR orders: what do physicians in Washington know?

### Context: 1: To assess whether physicians know of Washington State's prehospital do-not-resuscitate (DNR) policy, 6 years after its implementation.
2: Cross-sectional survey.
3: Washington State, April 2001.
4: Four hundred seventy-one practicing physicians.
5: Multivariate logistic regression was used to determine relationships between physician and practice characteristics with knowledge of policies governing advance care planning.
6: Among respondents, 60% did not know that Washington State requires an emergency medical service (EMS)-specific DNR order authored by a physician. Seventy-nine percent did not know that patient-authored advance directives apply only in hospitals and medical offices.


###Response: The findings in this study suggest that most physicians in Washington State lack knowledge about the documentation needed for EMS personnel to forgo pre-hospital attempts at cardiopulmonary resuscitation. Further study is needed to determine whether physician education or legislative change is necessary.
 