Provides recommended citations for HCUP resources including Clinical Classifications Software Refined (CCSR) data and Summary Trend Tables from the Agency for Healthcare Research and Quality (AHRQ) Healthcare Cost and Utilization Project (HCUP).
Arguments
- format
Character string specifying the citation format. Must be one of: "text" (default), "bibtex", or "r" (for R citation object).
- version
Character string specifying the CCSR version to cite. If "latest" (default), the function will attempt to fetch the latest version from the HCUP website. Otherwise, specify a version like "v2026.1".
- resource
Character string specifying which HCUP resource to cite. Options: "ccsr" (default) for CCSR data, or "trend_tables" for Summary Trend Tables.
Value
If format is "text", returns a character string with the citation.
If format is "bibtex", returns a character string with BibTeX format.
If format is "r", returns an R citation object.
Details
This function generates citations for HCUP resources following AHRQ/HCUP guidelines. The citation includes the appropriate version number and access date. For CCSR data, the version is automatically detected if not specified. For Summary Trend Tables, the citation references the general HCUP Summary Trend Tables resource.
Examples
# Text citation for CCSR
hcup_citation()
#> [1] "Agency for Healthcare Research and Quality. Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses, v2026.1. Healthcare Cost and Utilization Project (HCUP). Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/toolssoftware/ccsr/ccs_refined.jsp. Accessed December 05, 2025. "
# BibTeX format for CCSR
hcup_citation(format = "bibtex")
#> [1] "@misc{hcup_ccsr_20261,\n title = {Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses, v2026.1},\n author = {{Agency for Healthcare Research and Quality}},\n organization = {Healthcare Cost and Utilization Project (HCUP)},\n publisher = {Agency for Healthcare Research and Quality},\n address = {Rockville, MD},\n year = {2026},\n url = {https://www.hcup-us.ahrq.gov/toolssoftware/ccsr/ccs_refined.jsp},\n note = {Accessed December 05, 2025}\n}"
# Citation for Summary Trend Tables
hcup_citation(resource = "trend_tables")
#> [1] "Agency for Healthcare Research and Quality. HCUP Summary Trend Tables. Healthcare Cost and Utilization Project (HCUP). Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/reports/trendtables/summarytrendtables.jsp. Accessed December 05, 2025. "
# R citation object
hcup_citation(format = "r")
#> Agency for Healthcare Research and Quality (2026). “Clinical
#> Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses,
#> v2026.1.” Accessed December 05, 2025,
#> <https://www.hcup-us.ahrq.gov/toolssoftware/ccsr/ccs_refined.jsp>.