diff --git a/website/src/assets/pages/vis6-maps-of-health/vis2.vl.json b/website/src/assets/pages/vis6-maps-of-health/vis2.vl.json
index 59f5bbed..71bc6b70 100644
--- a/website/src/assets/pages/vis6-maps-of-health/vis2.vl.json
+++ b/website/src/assets/pages/vis6-maps-of-health/vis2.vl.json
@@ -93,27 +93,27 @@
       ]
     },
     {
-      "calculate": "datum.TIME_FIRST_OD == 253370764800000",
-      "as": "HAS_FIRST_OD"
+      "calculate": "datum.OVERDOSES == 0",
+      "as": "NO_FIRST_OD"
     },
     {
-      "calculate": "datum.TIME_FIRST_RX == 253370764800000",
-      "as": "HAS_FIRST_RX"
+      "calculate": "datum.TOTAL_PRESCRIPTIONS == 0",
+      "as": "NO_FIRST_RX"
     },
     {
-      "calculate": "datum.HAS_FIRST_OD ? 'N/A' : year(datetime(datum.TIME_FIRST_OD)) + ' Q' + quarter(datetime(datum.TIME_FIRST_OD))",
+      "calculate": "datum.NO_FIRST_OD ? 'N/A' : year(datetime(datum.TIME_FIRST_OD)) + ' Q' + quarter(datetime(datum.TIME_FIRST_OD))",
       "as": "TIME_FIRST_OD_VALUE"
     },
     {
-      "calculate": "datum.HAS_FIRST_RX ? 'N/A' : year(datetime(datum.TIME_FIRST_RX)) + ' Q' + quarter(datetime(datum.TIME_FIRST_RX))",
+      "calculate": "datum.NO_FIRST_RX ? 'N/A' : year(datetime(datum.TIME_FIRST_RX)) + ' Q' + quarter(datetime(datum.TIME_FIRST_RX))",
       "as": "TIME_FIRST_RX_VALUE"
     },
     {
-      "calculate": "datum.HAS_FIRST_OD ? 'N/A' : -datum.OD_DIFF",
+      "calculate": "datum.NO_FIRST_OD ? 'N/A' : -datum.OD_DIFF",
       "as": "OD_DIFF_VALUE"
     },
     {
-      "calculate": "datum.HAS_FIRST_RX ? 'N/A' : -datum.RX_DIFF",
+      "calculate": "datum.NO_FIRST_RX ? 'N/A' : -datum.RX_DIFF",
       "as": "RX_DIFF_VALUE"
     }
   ],