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.

[EX Q]: Question: Is preoperative prolonged steroid use associated with intraoperative blood transfusion in noncardiac surgical patients?
Answer: The effect of prolonged steroid use on bleeding, if any, thus seems likely to be small and is probably of limited clinical consequence. In contrast, corticosteroid use augments the risk of both systemic and wound infections.
[EX A]: no

[EX Q]: Question: Is low serum bilirubin concentration a predictor of chronic kidney disease?
Answer: Our study demonstrated that serum total bilirubin concentration could be a novel risk factor for the progression of CKD, defined as eGFR <60 ml/min/1.73 m(2), in the general population.
[EX A]: yes

[EX Q]: Question: Does nT-proBNP and Echocardiographic Parameters for Prediction of Cardiovascular Outcomes in Patients with CKD stage G2-G4?
Answer: Our data confirm NT-proBNP is an independent predictor of adverse outcomes in patients with CKD. The additional use of echocardiography for improvement of risk stratification is not supported by our results.
[EX A]:
yes