คนไข้ที่นับถือศาสนาโปรเตสแตนต์เควกเกอร์ และปีที่รับเข้าน้อยกว่า 2,179 คน มีจำนวนเท่าใด ไม่จำเป็นต้องใช้ตารางทั้งหมด
what is the number of patients whose religion is protestant quaker and admission year is less than 2179?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 WHERE demographic.religion = "PROTESTANT QUAKER" AND demographic.admityear < "2179"