จำนวนผู้ป่วยบาดเจ็บที่หลอดเลือดใหญ่โดยเฉลี่ยต่อปีคือเท่าไร - หลอดเลือดแดงตีบที่ได้รับการวินิจฉัยตั้งแต่ 2 ปีที่แล้ว? ไม่จำเป็นที่จะต้องใช้ตารางทั้งหมด
what is the average yearly number of patients with traumatic injury to major vessels - r femoral artery diagnosed since 2 years ago?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 = 'traumatic injury to major vessels - r femoral artery' AND DATETIME(diagnosis.diagnosistime) >= DATETIME(CURRENT_TIME(), '-2 year') GROUP BY STRFTIME('%y', diagnosis.diagnosistime)) AS t1