###HUMAN: what is patient 027-82318's average value for cpk-mb index?, ###ASSISTANT: SELECT AVG(lab.labresult) FROM lab WHERE lab.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '027-82318')) AND lab.labname = 'cpk-mb index'