instruction: how many hours have passed since patient 808 last started to stay in ward 33 during the current hospital encounter?
response: SELECT 24 * (STRFTIME('%j', CURRENT_TIME()) - STRFTIME('%j', transfers.intime)) FROM transfers WHERE transfers.icustay_id IN (SELECT icustays.icustay_id FROM icustays WHERE icustays.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 808 AND admissions.dischtime IS NULL)) AND transfers.wardid = 33 ORDER BY transfers.intime DESC LIMIT 1