MEPS HC-068: Multum Lexicon Addendum Files to MEPS Prescribed
Medicines Files 1996-2013
Update #3: 2/02/18
A problem was discovered with the linking between the MEPS Prescribed Medicines files and the Cerner Multum file that resulted in some incorrect therapeutic classes being assigned.
The Multum Lexicon Addendum files (HC-068) contain the corrected therapeutic classes. Analysts should use caution when using the Cerner Multum therapeutic class variables for analysis
and should always check for accuracy, because the Multum classification has been changed by the addition of new classes and subclasses, and by changes in the hierarchy of classes.
See the documentation for the Multum Lexicon Addendum files for examples.
The Multum Lexicon Addendum files (HC-068) also contain an additional variable not in the 1996
through 2012 MEPS Prescribed Medicines files: the generic name of the drug most commonly used by prescribing physicians.
Update #2: 11/22/13
STATA Programming Statements have been added.
Update #1: 10/25/11
Users should carefully review
the therapeutic classification variables when conducting trend analyses
or pooling years or panels, because Multum’s therapeutic classification
has changed across the years of the MEPS. The Multum variables on
each year of the MEPS Prescription Medication files reflect the most
recent classification available in the year the data were released.
The Multum classification has changed over time by the addition of
new classes and subclasses, and by changes in the hierarchy of classes.
Three examples follow. 1) In the 1996-2004 Prescription Medication
files, antidiabetic drugs are a subclass of the hormone class, but
in the 2005-2009 files, the antidiabetic subclass is part of a newly
added class of metabolic drugs. 2) In the 1996-2004 files, antihyperlipidemic
agents are categorized as a class with a number of subclasses including
HMG-COA reductase inhibitors (statins). In the 2005-2009 files, antihyperlipidemic
drugs are a subclass, and HMG-COA reductase inhibitors are a sub-subclass,
in the metabolic class. 3) In the 1996-2004 files, the psychotherapeutic
class comprises drugs from four subclasses: antidepressants, antipsychotics,
anxiolytics/sedatives/hypnotics and CNS stimulants. In the 2005-2009
files, the psychotherapeutic class is comprised only of antidepressants
and antipsychotics. Changes in the therapeutic classification may
occur between any years.