diff --git a/scripts/user_collection.py b/scripts/user_collection.py
index 3c12e1b..c2b5f6d 100644
--- a/scripts/user_collection.py
+++ b/scripts/user_collection.py
@@ -52,6 +52,8 @@ df = pd.DataFrame(data)
 print(df)
 print(df.size)
 
+print("duplicates", len(df['_id']) - len(df['_id'].drop_duplicates()))
+
 # Save the DataFrame to a CSV file
 output_filename = "data.csv"
 df.to_csv(output_filename, index=False)