diff --git a/csvdedupe/csvhelpers.py b/csvdedupe/csvhelpers.py
index 118c49c..8c354d8 100644
--- a/csvdedupe/csvhelpers.py
+++ b/csvdedupe/csvhelpers.py
@@ -62,8 +62,11 @@ def writeResults(clustered_dupes, input_file, output_file):
 
     cluster_membership = {}
     for cluster_id, (cluster, score) in enumerate(clustered_dupes):
-        for record_id in cluster:
-            cluster_membership[record_id] = cluster_id
+        for record_index, record_id in enumerate(cluster):
+            cluster_membership[record_id] = {
+                'cluster_id': cluster_id,
+                'score': score[record_index],
+            }
 
     unique_record_id = cluster_id + 1
 
@@ -73,15 +76,19 @@ def writeResults(clustered_dupes, input_file, output_file):
 
     heading_row = reader.next()
     heading_row.insert(0, 'Cluster ID')
+    heading_row.insert(1, 'Confidence')
     writer.writerow(heading_row)
 
     for row_id, row in enumerate(reader):
         if row_id in cluster_membership:
-            cluster_id = cluster_membership[row_id]
+            cluster_id = cluster_membership[row_id]['cluster_id']
+            score = cluster_membership[row_id]['score']
         else:
             cluster_id = unique_record_id
             unique_record_id += 1
+            score = ''
         row.insert(0, cluster_id)
+        row.insert(1, score)
         writer.writerow(row)