มีผู้ป่วยกี่รายที่ปีที่เสียชีวิตน้อยกว่าหรือเท่ากับ 2165 และรหัสรายการคือ 51053 ไม่จำเป็นต้องใช้ตารางทั้งหมด
how many patients whose year of death is less than or equal to 2165 and item id is 51053?It is not neccessary to use all the tables.
 demographic:  subject_id [ text]  hadm_id [ text]  name [ text]  marital_status [ text]  age [ text]  dob [ text]  gender [ text]  language [ text]  religion [ text]  admission_type [ text]  days_stay [ text]  insurance [ text]  ethnicity [ text]  expire_flag [ text]  admission_location [ text]  discharge_location [ text]  diagnosis [ text]  dod [ text]  dob_year [ text]  dod_year [ text]  admittime [ text]  dischtime [ text]  admityear [ text] 
SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN lab ON demographic.hadm_id = lab.hadm_id WHERE demographic.dod_year <= "2165.0" AND lab.itemid = "51053"