diff --git a/backend/data_layer/utils.py b/backend/data_layer/utils.py
index d9c460a..c971326 100644
--- a/backend/data_layer/utils.py
+++ b/backend/data_layer/utils.py
@@ -91,7 +91,8 @@ def calculate_confidence(
             else:
                 return "insufficient"
 
-        elif days_requested <= 28:
+        elif days_requested < 90:
+            # 8-89 days: Medium-term analysis
             if data_points >= 18:
                 return "high"
             elif data_points >= 12:
@@ -101,7 +102,7 @@ def calculate_confidence(
             else:
                 return "insufficient"
 
-        else:  # 90+ days
+        else:  # 90+ days: Long-term analysis
             if data_points >= 60:
                 return "high"
             elif data_points >= 40: