PhenX measure - substance - age of first use:-:Pt: Patient:-:PhenX - CISMeF
PhenX measure - substance - age of first use:-:Pt: Patient:-:PhenXLOINC code
Preferred Label : PhenX measure - substance - age of first use:-:Pt: Patient:-:PhenX;
LOINC status : DEPRECATED;
LOINC long common name : Deprecated PhenX measure - substance - age of first use;
LOINC description : Question asking the respondent how old s/he was when he or she first used the substance.
This measure assesses when the participant's substance use began.;