From 91a4315d7376b6c19b80e182f62fc31eeac6cbbe Mon Sep 17 00:00:00 2001
From: anna-stevenson <116270381+anna-stevenson@users.noreply.github.com>
Date: Wed, 15 Jan 2025 10:50:49 +0000
Subject: [PATCH] Update codelist_comparison_tool.md

---
 docs/resources/codelist_comparison_tool.md | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/docs/resources/codelist_comparison_tool.md b/docs/resources/codelist_comparison_tool.md
index ee32cb4..1200f56 100644
--- a/docs/resources/codelist_comparison_tool.md
+++ b/docs/resources/codelist_comparison_tool.md
@@ -7,5 +7,11 @@ permalink: /docs/resources/codelist_comparison_tool
 ---
 
 # Codelist Comparison Tool
-Coming soon
-{: .label .label-yellow }
+
+Research projects that utilise electronic health records often require multiple codelists, across various coding terminologies, to accurately define phenotpyes and generate cohorts. Often this involves gathering established codelists which can be large and complex and may not fully align with the focus of a specific project. A carefully constructed and considered codelist is crucial to ensure research outcomes are both accurate and meaningful.
+
+The Codelist Comparison Tool was developed to simplify the comparison of codelists and support the creation and curation of a refined and project-specific codelist. The tool integrates external libraries such as the <a href="https://phenotypes.healthdatagateway.org/" target="_blank">HDR UK Phenotype Library</a>, <a href="https://www.opencodelists.org/" target="_blank">OpenCodelists</a>, and user-generated datasets to enhance research workflows and generate more accurate and tailored codelists. 
+
+To start using the Codelist Comparison Tool please click <a href="https://bhf-dsc-hds.shinyapps.io/codelist_tool/" target="_blank">here</a>.
+
+For further information about using the Codelist Comparison Tool click here.