codelist_keywords: Extract keywords from clinical code lists

In rOpenHealth/rClinicalCodes: R tools for integrating with the www.clinicalcodes.org repository

Description

This function takes a dataframe of clinical codes and gives a vector of keywords, sorted by frequency

Usage

codelist_keywords(codelist, keyword_column = "description",
  extra_stopwords = NULL)

Arguments

codelist	a dataframe of clinical codes, such as downloaded using the get_ClinicalCodes function
keyword_column	The column of the dataframe to extract keywords from
extra_stopwords	an optional character vector of further stopwords to remove

Details

All terms are converted to lower case. Common stopwords, whitespace and punctuation are removed Optional extra_stopwords vector

Value

character vector of keywords, sorted by frequency in the list

Examples

## Not run: 
# Get codelist from url:
angina_codes <- get_ClinicalCodes(
url = "https://clinicalcodes.rss.mhs.man.ac.uk/medcodes/article/6/codelist/angina/download/")
codelist_keywords(angina_codes, extra_stopwords = c("good", "poor", "[x]"))

## End(Not run)

rOpenHealth/rClinicalCodes documentation built on May 26, 2019, 8:50 p.m.