instruction: has patient 32168 received a procedure of packed cell transfusion until 3 years ago?
response: SELECT COUNT(*) > 0 FROM procedures_icd WHERE procedures_icd.icd9_code = (SELECT d_icd_procedures.icd9_code FROM d_icd_procedures WHERE d_icd_procedures.short_title = 'packed cell transfusion') AND procedures_icd.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 32168) AND DATETIME(procedures_icd.charttime) <= DATETIME(CURRENT_TIME(), '-3 year')