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.
Input: Question: Does incorporating Serum Level of Hepatitis B Surface Antigen or Omitting Level of Hepatitis B Virus DNA Affect Calculation of Risk for Hepatocellular Carcinoma in Patients Without Cirrhosis?
Answer: Including data on serum level of HBsAg or removing data on level of HBV DNA do not alter the accuracy of the REACH-B scoring system in determining HCC risk in patients with chronic HBV infection without cirrhosis. It might be cost effective to replace the test for HBV DNA with assays to measure HBsAg in determining HCC risk. These modified scoring systems might replace the REACH-B system in specific situations.
Output:
no