str_extract

<p><code>stringr</code> does this, but here we have a small amount of base R code</p>

internal

Calculate comorbidities, Charlson and van Walraven
scores, perform fast and accurate validation, conversion,
manipulation, filtering and comparison of ICD-9 and ICD-10 codes. This
package enables a work flow from raw lists of ICD codes in hospital
databases to comorbidities.  ICD-9 and ICD-10 comorbidity mappings
from Quan (Deyo and Elixhauser versions), Elixhauser and AHRQ
included.  Common ambiguities and code formats are handled.

Jack O Wasey

Comorbidity Calculations and Tools for ICD-9 and ICD-10 Codes

Jack O. Wasey

William Murphy

Anobel Odisho

Vitaly Druker

Ed Lee

str_extract function

<code>stringr</code> does this, but here we have a small amount of base R code — str_extract

<code>stringr</code> does this, but here we have a small amount of base R code

str_extract: `stringr` does this, but here we have a small amount of base R code

Description

Usage

Arguments