Analysis of Electronic Frailty Index pilot data.
v123_something_xx: Directly generated by DataFinisher. Thev123prefix is the order of the parent data element in the query (e.g. 123). This order is alphabetically assigned due to upstream limitations, and will likely change with each data refresh. The_something_xxportion of the should usually be stable but isn't necessarily unique. The_xxsuffix indicates how this variable is represented (e.g._tfis TRUE/FALSE,_cdis a list of distinct codes,_mnis a numeric value or median of values if several were present in the raw data for that code and encounter).vi_something: Generated during post-processing and is an indicator variable that aggregates a collection of raw indicator variables (i.e. is true if any of its components are true during an encounter) or by filtering a raw multi-values variable (e.g. picking out a specific department from a provider specialty column)v_somethingis a renamed variable, because the original's name was too long or too obscure.z_somethingis a derived variable for internal use, for processing other variables and not intended for direct analysisa_somethingis an analytic variable created by these scripts from thevand sometimeszvariables.
