Detailed Instructions: Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Problem:Question: Have traditional systemic treatments fully met the needs of psoriasis patients : results from a national survey?
Answer: For most patients, none of the 4 systemic therapies widely utilized in 2002 for psoriasis were highly satisfactory. If we are to learn whether new treatments satisfy patients' needs, long term, prospective, comparative studies of heterogeneous patient populations that include patients' assessments are needed.
Solution:
no