diff --git a/HowBadIsMyBatch.ipynb b/HowBadIsMyBatch.ipynb
index 7865431572d..a3747a90a91 100644
--- a/HowBadIsMyBatch.ipynb
+++ b/HowBadIsMyBatch.ipynb
@@ -85,10 +85,6 @@
     "    isDose = df[\"VAX_DOSE_SERIES\"].str.contains(dose) if dose is not None else True\n",
     "    return df[isCovid19 & isManufacturer & isDose]\n",
     "\n",
-    "# FK-TODO: inline method\n",
-    "def createAndFilterDataFrameFromDescrs(vaersDescrs, manufacturer, dose):\n",
-    "    return filterDataFrame(createDataFrameFromDescrs(vaersDescrs), manufacturer = manufacturer, dose = dose)\n",
-    "\n",
     "def filterDataFrameForSevereEffects(df, dose):\n",
     "    return filterDataFrame(df, dose = dose)\n"
    ]
@@ -102,7 +98,7 @@
    "source": [
     "# FK-TODO: inline method\n",
     "def createAndFilterDataFrameFromFiles(dataDir, manufacturer, dose):\n",
-    "    return createAndFilterDataFrameFromDescrs(readAllVaersDescrs(dataDir), manufacturer, dose)\n"
+    "    return filterDataFrame(createDataFrameFromDescrs(readAllVaersDescrs(dataDir)), manufacturer = manufacturer, dose = dose)\n"
    ]
   },
   {
@@ -216,9 +212,10 @@
     "                        dtypes = {'VAX_DOSE_SERIES': \"string\"})\n",
     "                }\n",
     "            ]\n",
+    "        dataFrame = createDataFrameFromDescrs(vaersDescrs)\n",
     "            \n",
     "        # When\n",
-    "        dataFrame = createAndFilterDataFrameFromDescrs(vaersDescrs, \"MODERNA\", '1')\n",
+    "        dataFrame = filterDataFrame(dataFrame, manufacturer = \"MODERNA\", dose = '1')\n",
     "        \n",
     "        # Then\n",
     "        dataFrameExpected = self.createDataFrame(\n",
@@ -289,9 +286,10 @@
     "                       dtypes = {'VAX_DOSE_SERIES': \"string\"})\n",
     "               }\n",
     "            ]\n",
+    "        dataFrame = createDataFrameFromDescrs(vaersDescrs)\n",
     "            \n",
     "        # When\n",
-    "        dataFrame = createAndFilterDataFrameFromDescrs(vaersDescrs, \"MODERNA\", '1')\n",
+    "        dataFrame = filterDataFrame(dataFrame, manufacturer = \"MODERNA\", dose = '1')\n",
     "        \n",
     "        # Then\n",
     "        dataFrameExpected = self.createDataFrame(\n",
@@ -321,9 +319,10 @@
     "                       dtypes = {'VAX_DOSE_SERIES': \"string\"})\n",
     "               }\n",
     "            ]\n",
+    "        dataFrame = createDataFrameFromDescrs(vaersDescrs)\n",
     "            \n",
     "        # When\n",
-    "        dataFrame = createAndFilterDataFrameFromDescrs(vaersDescrs, \"MODERNA\", '2')\n",
+    "        dataFrame = filterDataFrame(dataFrame, manufacturer = \"MODERNA\", dose = '2')\n",
     "        \n",
     "        # Then\n",
     "        dataFrameExpected = self.createDataFrame(\n",
@@ -350,7 +349,7 @@
     "class BatchCodeTableTest(unittest.TestCase):\n",
     "\n",
     "    def test_createBatchCodeTable2(self):\n",
-    "        dataFrame = createAndFilterDataFrameFromDescrs(\n",
+    "        dataFrame = createDataFrameFromDescrs(\n",
     "            [\n",
     "               {\n",
     "                   'VAERSDATA': self.createDataFrame(\n",
@@ -386,10 +385,8 @@
     "                            \"1996874\"],\n",
     "                        dtypes = {'VAX_DOSE_SERIES': \"string\"})\n",
     "                }\n",
-    "            ],\n",
-    "            \"MODERNA\",\n",
-    "            '1')\n",
-    "\n",
+    "            ])\n",
+    "        dataFrame = filterDataFrame(dataFrame, manufacturer = \"MODERNA\", dose = '1')\n",
     "        self._test_createBatchCodeTable(dataFrame);\n",
     "\n",
     "    def test_createBatchCodeTable(self):\n",