diff --git a/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap b/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap
index 07acddd08..b335078c5 100644
--- a/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap
+++ b/src/__tests__/CompareResults/__snapshots__/ResultsView.test.tsx.snap
@@ -141,6 +141,35 @@ exports[`Results View Should display Base, New and Common graphs with replicates
               </tbody>
             </table>
           </div>
+          <div
+            class="MuiPaper-root MuiPaper-elevation MuiPaper-rounded MuiPaper-elevation0 MuiAlert-root MuiAlert-colorInfo MuiAlert-standardInfo MuiAlert-standard css-st68mf-MuiPaper-root-MuiAlert-root"
+            role="alert"
+            style="--Paper-shadow: none;"
+          >
+            <div
+              class="MuiAlert-icon css-vab54s-MuiAlert-icon"
+            >
+              <svg
+                aria-hidden="true"
+                class="MuiSvgIcon-root MuiSvgIcon-fontSizeInherit css-6gorna-MuiSvgIcon-root"
+                data-testid="InfoOutlinedIcon"
+                focusable="false"
+                viewBox="0 0 24 24"
+              >
+                <path
+                  d="M11,9H13V7H11M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20, 12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10, 10 0 0,0 12,2M11,17H13V11H11V17Z"
+                />
+              </svg>
+            </div>
+            <div
+              class="MuiAlert-message css-zioonp-MuiAlert-message"
+            >
+              <strong>
+                Effect Size:
+              </strong>
+               
+            </div>
+          </div>
         </div>
       </div>
     </div>
@@ -533,6 +562,35 @@ exports[`Results View Should display Base, New and Common graphs with tooltips 1
               </tbody>
             </table>
           </div>
+          <div
+            class="MuiPaper-root MuiPaper-elevation MuiPaper-rounded MuiPaper-elevation0 MuiAlert-root MuiAlert-colorInfo MuiAlert-standardInfo MuiAlert-standard css-st68mf-MuiPaper-root-MuiAlert-root"
+            role="alert"
+            style="--Paper-shadow: none;"
+          >
+            <div
+              class="MuiAlert-icon css-vab54s-MuiAlert-icon"
+            >
+              <svg
+                aria-hidden="true"
+                class="MuiSvgIcon-root MuiSvgIcon-fontSizeInherit css-6gorna-MuiSvgIcon-root"
+                data-testid="InfoOutlinedIcon"
+                focusable="false"
+                viewBox="0 0 24 24"
+              >
+                <path
+                  d="M11,9H13V7H11M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20, 12C20,16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10, 10 0 0,0 12,2M11,17H13V11H11V17Z"
+                />
+              </svg>
+            </div>
+            <div
+              class="MuiAlert-message css-zioonp-MuiAlert-message"
+            >
+              <strong>
+                Effect Size:
+              </strong>
+               
+            </div>
+          </div>
         </div>
       </div>
     </div>
diff --git a/src/common/testVersions/mannWhitney.tsx b/src/common/testVersions/mannWhitney.tsx
index 0312199ad..1f8fdda32 100644
--- a/src/common/testVersions/mannWhitney.tsx
+++ b/src/common/testVersions/mannWhitney.tsx
@@ -2,6 +2,7 @@ import KeyboardDoubleArrowUpIcon from '@mui/icons-material/KeyboardDoubleArrowUp
 import ThumbDownIcon from '@mui/icons-material/ThumbDown';
 import ThumbUpIcon from '@mui/icons-material/ThumbUp';
 import WarningIcon from '@mui/icons-material/Warning';
+import Alert from '@mui/material/Alert';
 import Box from '@mui/material/Box';
 
 import { MannWhitneyCompareMetrics } from '../../components/CompareResults/MannWhitneyCompareMetrics';
@@ -384,9 +385,10 @@ export const mannWhitneyStrategy = {
 
   renderExpandedRight(result: CombinedResultsItemType) {
     const mwResult = result as MannWhitneyResultsItem;
-    const { cles, cles_direction } = mwResult.cles ?? {
+    const { cles, cles_direction, mann_whitney_u_cles } = mwResult.cles ?? {
       cles: '',
       cles_direction: '',
+      mann_whitney_u_cles: '',
     };
     const { cliffs_delta, cliffs_interpretation } = mwResult;
     const pValue = mwResult.mann_whitney_test?.pvalue;
@@ -404,6 +406,9 @@ export const mannWhitneyStrategy = {
           cles={cles}
           cles_direction={cles_direction}
         />
+        <Alert severity='info'>
+          <strong>Effect Size:</strong> {mann_whitney_u_cles}
+        </Alert>
         <ModeInterpretation result={mwResult} />
       </>
     );