Preferred Label : Does respondent consistently fall asleep very late - 12 a.m. or later, at night and
characterize him or herself as a night owl with a strong preference;
LOINC status : ACTIVE;
UMLS MTHU# : MTHU039579;
Origin ID : LP120612-9;
UMLS CUI : C3175981;
LOINC code(s)
Semantic type(s)