ค่าเปอร์เซ็นไทล์ของเม็ดเลือดแดงที่ 3.88 ในผู้ป่วยอายุเท่ากับผู้ป่วย 27146 ที่พบในโรงพยาบาลปัจจุบันคือเท่าใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
what is the red blood cells percentile of 3.88 among patients of the same age as patient 27146 in the current hospital encounter?It is not neccessary to use all the tables.
 labevents:  row_id [ number]  subject_id [ number]  hadm_id [ number]  itemid [ number]  charttime [ time]  valuenum [ number]  valueuom [ text] 
SELECT DISTINCT t1.c1 FROM (SELECT labevents.valuenum, PERCENT_RANK() OVER (ORDER BY labevents.valuenum) AS c1 FROM labevents WHERE labevents.itemid IN (SELECT d_labitems.itemid FROM d_labitems WHERE d_labitems.label = 'red blood cells') AND labevents.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.age = (SELECT admissions.age FROM admissions WHERE admissions.subject_id = 27146 AND admissions.dischtime IS NULL))) AS t1 WHERE t1.valuenum = 3.88