diff --git a/docs/notebooks/09_diff_splice.ipynb b/docs/notebooks/09_diff_splice.ipynb
index 3fd5611..45e0cd1 100644
--- a/docs/notebooks/09_diff_splice.ipynb
+++ b/docs/notebooks/09_diff_splice.ipynb
@@ -775,15 +775,258 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [
     {
      "name": "stderr",
      "output_type": "stream",
      "text": [
-      "  4%|▍         | 477/10803 [00:00<00:04, 2266.87genes/s]"
+      "100%|██████████| 10803/10803 [00:05<00:00, 2003.31genes/s]\n"
      ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
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+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
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+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>gene_id</th>\n",
+       "      <th>gene_name</th>\n",
+       "      <th>strand</th>\n",
+       "      <th>eventA_type</th>\n",
+       "      <th>eventB_type</th>\n",
+       "      <th>eventA_start</th>\n",
+       "      <th>evemtA_end</th>\n",
+       "      <th>eventB_start</th>\n",
+       "      <th>eventB_end</th>\n",
+       "      <th>pvalue</th>\n",
+       "      <th>padj</th>\n",
+       "      <th>stat</th>\n",
+       "      <th>log2OR</th>\n",
+       "      <th>dcPSI_AB</th>\n",
+       "      <th>dcPSI_BA</th>\n",
+       "      <th>priA_priB</th>\n",
+       "      <th>priA_altB</th>\n",
+       "      <th>altA_priB</th>\n",
+       "      <th>altA_altB</th>\n",
+       "      <th>priA_priB_trID</th>\n",
+       "      <th>priA_altB_trID</th>\n",
+       "      <th>altA_priB_trID</th>\n",
+       "      <th>altA_altB_trID</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>52</th>\n",
+       "      <td>ENSG00000147813.16</td>\n",
+       "      <td>NAPRT</td>\n",
+       "      <td>-</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>143575093</td>\n",
+       "      <td>143575190</td>\n",
+       "      <td>143574900</td>\n",
+       "      <td>143574985</td>\n",
+       "      <td>4.436456e-82</td>\n",
+       "      <td>5.501206e-80</td>\n",
+       "      <td>98.895238</td>\n",
+       "      <td>6.627829</td>\n",
+       "      <td>0.525552</td>\n",
+       "      <td>0.637141</td>\n",
+       "      <td>472</td>\n",
+       "      <td>45</td>\n",
+       "      <td>14</td>\n",
+       "      <td>132</td>\n",
+       "      <td>[0, 5, 6, 7, 54, 62, 73, 17, 100, 24, 30, 46, ...</td>\n",
+       "      <td>[25, 48, 129, 68, 128, 33, 133, 101, 135, 141,...</td>\n",
+       "      <td>[41, 96, 110, 112, 115]</td>\n",
+       "      <td>[21, 42, 1, 12, 31, 71, 44, 51, 63, 78, 92, 13...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>107</th>\n",
+       "      <td>ENSG00000182325.11</td>\n",
+       "      <td>FBXL6</td>\n",
+       "      <td>-</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>144357786</td>\n",
+       "      <td>144358031</td>\n",
+       "      <td>144357121</td>\n",
+       "      <td>144357438</td>\n",
+       "      <td>1.074426e-74</td>\n",
+       "      <td>6.661440e-73</td>\n",
+       "      <td>1715.833333</td>\n",
+       "      <td>10.744694</td>\n",
+       "      <td>0.472927</td>\n",
+       "      <td>0.469753</td>\n",
+       "      <td>142</td>\n",
+       "      <td>3</td>\n",
+       "      <td>4</td>\n",
+       "      <td>145</td>\n",
+       "      <td>[1, 21, 34, 7, 32, 36, 38, 72, 45, 81, 51, 85,...</td>\n",
+       "      <td>[89, 87, 71]</td>\n",
+       "      <td>[4, 40]</td>\n",
+       "      <td>[2, 9, 19, 41, 14, 24, 44, 48, 56, 11, 54, 17,...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>55</th>\n",
+       "      <td>ENSG00000167700.9</td>\n",
+       "      <td>MFSD3</td>\n",
+       "      <td>+</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>144510015</td>\n",
+       "      <td>144510359</td>\n",
+       "      <td>144510507</td>\n",
+       "      <td>144510597</td>\n",
+       "      <td>4.299909e-32</td>\n",
+       "      <td>1.777296e-30</td>\n",
+       "      <td>inf</td>\n",
+       "      <td>38.459595</td>\n",
+       "      <td>0.503866</td>\n",
+       "      <td>0.743802</td>\n",
+       "      <td>180</td>\n",
+       "      <td>20</td>\n",
+       "      <td>0</td>\n",
+       "      <td>42</td>\n",
+       "      <td>[0, 3, 23, 35, 5, 38, 39]</td>\n",
+       "      <td>[2, 21, 19, 20, 29]</td>\n",
+       "      <td>[]</td>\n",
+       "      <td>[11, 26, 14, 36, 18]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>45</th>\n",
+       "      <td>ENSG00000160957.15</td>\n",
+       "      <td>RECQL4</td>\n",
+       "      <td>-</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>144512771</td>\n",
+       "      <td>144512846</td>\n",
+       "      <td>144512324</td>\n",
+       "      <td>144512391</td>\n",
+       "      <td>1.341822e-31</td>\n",
+       "      <td>4.159649e-30</td>\n",
+       "      <td>11.529161</td>\n",
+       "      <td>3.527216</td>\n",
+       "      <td>0.331031</td>\n",
+       "      <td>0.344543</td>\n",
+       "      <td>1231</td>\n",
+       "      <td>87</td>\n",
+       "      <td>81</td>\n",
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+       "      <td>[408, 110, 112, 28, 29, 158, 190, 215, 495, 51...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>108</th>\n",
+       "      <td>ENSG00000182325.11</td>\n",
+       "      <td>FBXL6</td>\n",
+       "      <td>-</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>IR</td>\n",
+       "      <td>144357786</td>\n",
+       "      <td>144358031</td>\n",
+       "      <td>144356915</td>\n",
+       "      <td>144356989</td>\n",
+       "      <td>6.335233e-27</td>\n",
+       "      <td>1.571138e-25</td>\n",
+       "      <td>51.918519</td>\n",
+       "      <td>5.698177</td>\n",
+       "      <td>0.228402</td>\n",
+       "      <td>0.451672</td>\n",
+       "      <td>163</td>\n",
+       "      <td>90</td>\n",
+       "      <td>3</td>\n",
+       "      <td>86</td>\n",
+       "      <td>[1, 12, 21, 34, 4, 7, 75, 86, 15, 23, 25, 26, ...</td>\n",
+       "      <td>[2, 3, 41, 24, 44, 48, 8, 17, 37, 6, 18, 33, 5...</td>\n",
+       "      <td>[32, 53]</td>\n",
+       "      <td>[9, 19, 14, 56, 11, 13, 54, 42, 63, 64, 5, 16,...</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                gene_id gene_name strand eventA_type eventB_type  \\\n",
+       "52   ENSG00000147813.16     NAPRT      -          IR          IR   \n",
+       "107  ENSG00000182325.11     FBXL6      -          IR          IR   \n",
+       "55    ENSG00000167700.9     MFSD3      +          IR          IR   \n",
+       "45   ENSG00000160957.15    RECQL4      -          IR          IR   \n",
+       "108  ENSG00000182325.11     FBXL6      -          IR          IR   \n",
+       "\n",
+       "     eventA_start  evemtA_end  eventB_start  eventB_end        pvalue  \\\n",
+       "52      143575093   143575190     143574900   143574985  4.436456e-82   \n",
+       "107     144357786   144358031     144357121   144357438  1.074426e-74   \n",
+       "55      144510015   144510359     144510507   144510597  4.299909e-32   \n",
+       "45      144512771   144512846     144512324   144512391  1.341822e-31   \n",
+       "108     144357786   144358031     144356915   144356989  6.335233e-27   \n",
+       "\n",
+       "             padj         stat     log2OR  dcPSI_AB  dcPSI_BA  priA_priB  \\\n",
+       "52   5.501206e-80    98.895238   6.627829  0.525552  0.637141        472   \n",
+       "107  6.661440e-73  1715.833333  10.744694  0.472927  0.469753        142   \n",
+       "55   1.777296e-30          inf  38.459595  0.503866  0.743802        180   \n",
+       "45   4.159649e-30    11.529161   3.527216  0.331031  0.344543       1231   \n",
+       "108  1.571138e-25    51.918519   5.698177  0.228402  0.451672        163   \n",
+       "\n",
+       "     priA_altB  altA_priB  altA_altB  \\\n",
+       "52          45         14        132   \n",
+       "107          3          4        145   \n",
+       "55          20          0         42   \n",
+       "45          87         81         66   \n",
+       "108         90          3         86   \n",
+       "\n",
+       "                                        priA_priB_trID  \\\n",
+       "52   [0, 5, 6, 7, 54, 62, 73, 17, 100, 24, 30, 46, ...   \n",
+       "107  [1, 21, 34, 7, 32, 36, 38, 72, 45, 81, 51, 85,...   \n",
+       "55                           [0, 3, 23, 35, 5, 38, 39]   \n",
+       "45   [22, 31, 6, 20, 114, 147, 124, 11, 38, 72, 13,...   \n",
+       "108  [1, 12, 21, 34, 4, 7, 75, 86, 15, 23, 25, 26, ...   \n",
+       "\n",
+       "                                        priA_altB_trID  \\\n",
+       "52   [25, 48, 129, 68, 128, 33, 133, 101, 135, 141,...   \n",
+       "107                                       [89, 87, 71]   \n",
+       "55                                 [2, 21, 19, 20, 29]   \n",
+       "45   [401, 191, 221, 94, 364, 68, 204, 127, 519, 17...   \n",
+       "108  [2, 3, 41, 24, 44, 48, 8, 17, 37, 6, 18, 33, 5...   \n",
+       "\n",
+       "                                        altA_priB_trID  \\\n",
+       "52                             [41, 96, 110, 112, 115]   \n",
+       "107                                            [4, 40]   \n",
+       "55                                                  []   \n",
+       "45   [117, 136, 279, 259, 271, 532, 292, 49, 184, 2...   \n",
+       "108                                           [32, 53]   \n",
+       "\n",
+       "                                        altA_altB_trID  \n",
+       "52   [21, 42, 1, 12, 31, 71, 44, 51, 63, 78, 92, 13...  \n",
+       "107  [2, 9, 19, 41, 14, 24, 44, 48, 56, 11, 54, 17,...  \n",
+       "55                                [11, 26, 14, 36, 18]  \n",
+       "45   [408, 110, 112, 28, 29, 158, 190, 215, 495, 51...  \n",
+       "108  [9, 19, 14, 56, 11, 13, 54, 42, 63, 64, 5, 16,...  "
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
     }
    ],
    "source": [
@@ -802,9 +1045,215 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 7,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "100%|██████████| 10803/10803 [00:00<00:00, 14123.06genes/s]\n"
+     ]
+    },
+    {
+     "data": {
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+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>gene_id</th>\n",
+       "      <th>gene_name</th>\n",
+       "      <th>chrom</th>\n",
+       "      <th>strand</th>\n",
+       "      <th>start</th>\n",
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+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>5982</th>\n",
+       "      <td>ENSG00000070756.17</td>\n",
+       "      <td>PABPC1</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>100685815</td>\n",
+       "      <td>100722809</td>\n",
+       "      <td>0.000000e+00</td>\n",
+       "      <td>0.000000e+00</td>\n",
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+       "    <tr>\n",
+       "      <th>5094</th>\n",
+       "      <td>ENSG00000156482.11</td>\n",
+       "      <td>RPL30</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>98024850</td>\n",
+       "      <td>98046469</td>\n",
+       "      <td>0.000000e+00</td>\n",
+       "      <td>0.000000e+00</td>\n",
+       "      <td>0.515042</td>\n",
+       "      <td>[3, 2]</td>\n",
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+       "    <tr>\n",
+       "      <th>4805</th>\n",
+       "      <td>ENSG00000161016.18</td>\n",
+       "      <td>RPL8</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>144789764</td>\n",
+       "      <td>144792587</td>\n",
+       "      <td>0.000000e+00</td>\n",
+       "      <td>0.000000e+00</td>\n",
+       "      <td>-0.477042</td>\n",
+       "      <td>[2, 6]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4632</th>\n",
+       "      <td>ENSG00000164924.18</td>\n",
+       "      <td>YWHAZ</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>100916522</td>\n",
+       "      <td>100953388</td>\n",
+       "      <td>0.000000e+00</td>\n",
+       "      <td>0.000000e+00</td>\n",
+       "      <td>0.303116</td>\n",
+       "      <td>[31, 11]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4172</th>\n",
+       "      <td>ENSG00000147604.14</td>\n",
+       "      <td>RPL7</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>73290241</td>\n",
+       "      <td>73295789</td>\n",
+       "      <td>1.157393e-170</td>\n",
+       "      <td>1.885004e-172</td>\n",
+       "      <td>0.092221</td>\n",
+       "      <td>[2, 31]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3235</th>\n",
+       "      <td>ENSG00000104408.11</td>\n",
+       "      <td>EIF3E</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>108162786</td>\n",
+       "      <td>108443496</td>\n",
+       "      <td>2.092139e-137</td>\n",
+       "      <td>4.088872e-139</td>\n",
+       "      <td>0.166874</td>\n",
+       "      <td>[0, 20]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>9988</th>\n",
+       "      <td>ENSG00000104312.8</td>\n",
+       "      <td>RIPK2</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>+</td>\n",
+       "      <td>89757805</td>\n",
+       "      <td>89791064</td>\n",
+       "      <td>6.088181e-101</td>\n",
+       "      <td>1.388185e-102</td>\n",
+       "      <td>0.677697</td>\n",
+       "      <td>[2, 0]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4239</th>\n",
+       "      <td>ENSG00000129696.13</td>\n",
+       "      <td>TTI2</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>33473385</td>\n",
+       "      <td>33513185</td>\n",
+       "      <td>9.366700e-100</td>\n",
+       "      <td>2.440834e-101</td>\n",
+       "      <td>-0.617118</td>\n",
+       "      <td>[3, 22]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1369</th>\n",
+       "      <td>ENSG00000147684.10</td>\n",
+       "      <td>NDUFB9</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>+</td>\n",
+       "      <td>124539100</td>\n",
+       "      <td>124580648</td>\n",
+       "      <td>4.019587e-89</td>\n",
+       "      <td>1.178381e-90</td>\n",
+       "      <td>0.399575</td>\n",
+       "      <td>[0, -1]</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1525</th>\n",
+       "      <td>ENSG00000104320.15</td>\n",
+       "      <td>NBN</td>\n",
+       "      <td>chr8</td>\n",
+       "      <td>-</td>\n",
+       "      <td>89924514</td>\n",
+       "      <td>90003228</td>\n",
+       "      <td>5.103980e-88</td>\n",
+       "      <td>1.662534e-89</td>\n",
+       "      <td>-0.409024</td>\n",
+       "      <td>[2, 1]</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "                 gene_id gene_name chrom strand      start        end  \\\n",
+       "5982  ENSG00000070756.17    PABPC1  chr8      -  100685815  100722809   \n",
+       "5094  ENSG00000156482.11     RPL30  chr8      -   98024850   98046469   \n",
+       "4805  ENSG00000161016.18      RPL8  chr8      -  144789764  144792587   \n",
+       "4632  ENSG00000164924.18     YWHAZ  chr8      -  100916522  100953388   \n",
+       "4172  ENSG00000147604.14      RPL7  chr8      -   73290241   73295789   \n",
+       "3235  ENSG00000104408.11     EIF3E  chr8      -  108162786  108443496   \n",
+       "9988   ENSG00000104312.8     RIPK2  chr8      +   89757805   89791064   \n",
+       "4239  ENSG00000129696.13      TTI2  chr8      -   33473385   33513185   \n",
+       "1369  ENSG00000147684.10    NDUFB9  chr8      +  124539100  124580648   \n",
+       "1525  ENSG00000104320.15       NBN  chr8      -   89924514   90003228   \n",
+       "\n",
+       "               padj         pvalue   deltaPI transcript_ids  \n",
+       "5982   0.000000e+00   0.000000e+00 -0.289084         [2, 1]  \n",
+       "5094   0.000000e+00   0.000000e+00  0.515042         [3, 2]  \n",
+       "4805   0.000000e+00   0.000000e+00 -0.477042         [2, 6]  \n",
+       "4632   0.000000e+00   0.000000e+00  0.303116       [31, 11]  \n",
+       "4172  1.157393e-170  1.885004e-172  0.092221        [2, 31]  \n",
+       "3235  2.092139e-137  4.088872e-139  0.166874        [0, 20]  \n",
+       "9988  6.088181e-101  1.388185e-102  0.677697         [2, 0]  \n",
+       "4239  9.366700e-100  2.440834e-101 -0.617118        [3, 22]  \n",
+       "1369   4.019587e-89   1.178381e-90  0.399575        [0, -1]  \n",
+       "1525   5.103980e-88   1.662534e-89 -0.409024         [2, 1]  "
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "isoseq.die_test(groups=isoseq.groups()).sort_values('pvalue').head(10)"
    ]