คำนวณผู้ป่วยที่ได้รับการวินิจฉัยด้วยรหัส icd9 5770 ที่ได้รับอนุญาตให้กลับบ้านได้แล้ว ไม่จำเป็นต้องใช้ตารางทั้งหมด
Calculate the patients diagnosed with icd9 code 5770 who were discharged to home.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 diagnoses ON demographic.hadm_id = diagnoses.hadm_id WHERE demographic.discharge_location = "HOME" AND diagnoses.icd9_code = "5770"