Liver Transplant — Project Summary

Author

Tianqi Ouyang

Published

September 15, 2026

Overview

The Liver Transplant sub-project of the HARMONY Terlipressin Registry describes transplant listing, liver transplantation, renal replacement therapy, readmission and survival through 1 year in HRS-AKI patients treated with terlipressin, using the sites’ Extended Follow-Up (EFU) REDCap form.

Cohort

  • Master cohort — the locked final_master_01282026.xlsx (n = 243), loaded through the shared pipeline with every standard derived variable.
  • EFU cohort — master patients with an EFU record in the 13 site CSVs under Extended Data Collection/Finalized Files/09SEP2026/ (222 rows; 221 join to the master — one CCF row is not a master patient, and the 22 CSF patients have no EFU file). All three tables use this cohort.

Outputs

# Output Cohort Stratifier Rows
1 Demographics Table 1 EFU cohort efu_listingstatus age, sex, race, etiology, prior complications, prior AKI, midodrine / octreotide, pressors, MELD 3.0 (admission, day 0), baseline / admission labs, map_day0_avg, ACLF grade, CLIF-C, ICU, extended criteria 1–4, terlipressin route, duration, albumin before / during therapy, HRS response
2 EFU summary EFU cohort listed_transplant (index hospitalization) all 40 EFU outcome fields
3 EFU summary EFU cohort efu_listingstatus (any time ≤ 1 yr) same, minus the stratifier

Plus a join-QC table and a cross-tabulation of the two listing definitions.

Project-specific derived variables

Variable Definition
id_key Normalized study ID (UPPERCASE-PREFIX-integer, YALYALE) used to join EFU files to the master
map_day0_avg Mean of map_terli_day0_time0time3 after recoding 0 (not measured) to NA
efu_* EFU form fields (see EFU Variables); yes/no as 0/1, labs parsed with parse_number()

Pipeline

flowchart TD
    A[final_master_01282026.xlsx<br/>n = 243] --> B[Source shared_pipeline.qmd]
    C[13 site EFU CSVs<br/>09SEP2026, 222 rows] --> D[Normalize study IDs]
    B --> E[inner_join on id_key<br/>EFU cohort n = 221]
    D --> E
    E --> F[map_day0_avg, numeric coercions]
    F --> G[Table 1 — demographics<br/>by efu_listingstatus]
    F --> H[Table 2 — EFU outcomes<br/>by listed_transplant]
    F --> I[Table 3 — EFU outcomes<br/>by efu_listingstatus]

Repository Structure

Path Description
docs/analysis.qmd Canonical analysis — sources the shared pipeline, imports EFU data, renders Tables 1–3 with tableone::CreateTableOne() (the page shows the same output as the CSVs)
docs/efu_variables.qmd EFU REDCap data dictionary, rendered
docs/tables/ CSV versions of the tables
EFU_DataDictionary.csv REDCap data dictionary export for the EFU form
Code/liver request 11122025.Rmd Legacy analyst script (Nov 2025; published to RPubs) — superseded
Code/liver-transplant-0922.Rmd, Code/liver transplant 0922.Rmd Earlier analyst scripts (Sep–Oct 2025) — superseded
Requests/ Original analysis request documents
Results/ Legacy CSV / HTML outputs from the .Rmd scripts