diff --git a/03_INTERVENTIONAL_M0/outputs/.gitignore b/03_INTERVENTIONAL_M0/outputs/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..33233632e9f31b16dc1aa88014f642d2b91d250a
--- /dev/null
+++ b/03_INTERVENTIONAL_M0/outputs/.gitignore
@@ -0,0 +1,2 @@
+.DS_Store
+*.csv