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.
Q: Question: Is percutaneous biliary drainage oncologically inferior to endoscopic drainage : a propensity score matching analysis in resectable distal cholangiocarcinoma?
Answer: Compared with EBD, PTBD increases the incidence of seeding metastasis after resection for distal cholangiocarcinoma and shortens postoperative survival.
A:
yes