มีผู้ป่วยกี่รายที่ได้รับการวินิจฉัยว่าเป็นโรค adv eff blood agent ซึ่งไม่ได้กลับมาที่โรงพยาบาลในเดือนเดียวกันในปี 2105? ไม่จำเป็นที่จะต้องใช้ตารางทั้งหมด
how many patients were diagnosed with adv eff blood agent nec who did not return to the hospital in the same month in 2105?It is not neccessary to use all the tables.
 patients:  row_id [ number]  subject_id [ number]  gender [ text]  dob [ time]  dod [ time] 
SELECT (SELECT COUNT(DISTINCT t1.subject_id) FROM (SELECT admissions.subject_id, diagnoses_icd.charttime FROM diagnoses_icd JOIN admissions ON diagnoses_icd.hadm_id = admissions.hadm_id WHERE diagnoses_icd.icd9_code = (SELECT d_icd_diagnoses.icd9_code FROM d_icd_diagnoses WHERE d_icd_diagnoses.short_title = 'adv eff blood agent nec') AND STRFTIME('%y', diagnoses_icd.charttime) = '2105') AS t1) - (SELECT COUNT(DISTINCT t2.subject_id) FROM (SELECT admissions.subject_id, diagnoses_icd.charttime FROM diagnoses_icd JOIN admissions ON diagnoses_icd.hadm_id = admissions.hadm_id WHERE diagnoses_icd.icd9_code = (SELECT d_icd_diagnoses.icd9_code FROM d_icd_diagnoses WHERE d_icd_diagnoses.short_title = 'adv eff blood agent nec') AND STRFTIME('%y', diagnoses_icd.charttime) = '2105') AS t2 JOIN admissions ON t2.subject_id = admissions.subject_id WHERE t2.charttime < admissions.admittime AND STRFTIME('%y', admissions.admittime) = '2105' AND DATETIME(t2.charttime, 'start of month') = DATETIME(admissions.admittime, 'start of month'))