In the U.S., smoking rates have historically been lower among women than men
With such heavy levies on tobacco products, its near impossible for producers and stockists to sell for less than they already do
Recall that in our context processing step in Section Note enrichment, we remove notes that do not contain any IDU keywords
ICD-9 International classification of diseases, 9th revision The Ninth Revision of International Classification of Diseases, the international classification standard to define the universe of diseases, disorders, injuries, and other related health conditions
Builders of medical informatics applications need controlled medical vocabularies to support their applications, and it is to their advantage to use available standards with multiple purposes including capturing clinical findings, natural language processing, indexing medical records, indexing medical literature, and representing medical knowledge (Cimino 1998)