In the Elixhauser derived mappings, uncomplicated and complicated
hypertension are listed separately, but are always combined in the final
analyses. Uncomplicated and complicated hypertension are list separately
and as "Hypertension, combined." Abbrev suffix indicates a very short
space-free description. Quan's version of Elixhauser is identical. AHRQ's
update drops the arrythmia field. The naming convention is a root, e.g.
elixComorbid
, with neither/either/both suffixes Htn
and
Abbrev
. The Charlson derived mappings do not include hypertension.
Abbreviated comorbidity names are helpful for interactive work, whereas the
full names might be prefered for plotting.