จำนวนผู้ป่วยที่ได้รับการวินิจฉัยด้วยการปลูกถ่ายตับ s/p โดยเฉลี่ยต่อวันในปีนี้คือเท่าใด? ไม่จำเป็นต้องใช้ตารางทั้งหมด
what are the average daily number of patients diagnosed with s/p liver transplant in this year?It is not neccessary to use all the tables.
 patient:  uniquepid [ text]  patienthealthsystemstayid [ number]  patientunitstayid [ number]  gender [ text]  age [ text]  ethnicity [ text]  hospitalid [ number]  wardid [ number]  admissionheight [ number]  admissionweight [ number]  dischargeweight [ number]  hospitaladmittime [ time]  hospitaladmitsource [ text]  unitadmittime [ time]  unitdischargetime [ time]  hospitaldischargetime [ time]  hospitaldischargestatus [ text] 
SELECT AVG(t1.c1) FROM (SELECT COUNT(DISTINCT diagnosis.patientunitstayid) AS c1 FROM diagnosis WHERE diagnosis.diagnosisname = 's/p liver transplant' AND DATETIME(diagnosis.diagnosistime, 'start of year') = DATETIME(CURRENT_TIME(), 'start of year', '-0 year') GROUP BY STRFTIME('%y-%m-%d', diagnosis.diagnosistime)) AS t1