Table 4.
Bottom 10 rates of Adderall tweets for 150-mile college and university clusters in the United States.
| Rank | IDa | Rate | GPS Adderall Tweeters | Total Cluster Population | Number in the Cluster |
| 77 | Central Texas | 5.8 | 3 | 52,076 | 3 |
| 78 | Alaska | 5.5 | 1 | 18,154 | 1 |
| 79 | Southern California | 5.5 | 55 | 1,008,210 | 48 |
| 80 | Puerto Rico | 5.0 | 3 | 60,579 | 4 |
| 81 | Northern Nevada | 4.5 | 3 | 66,242 | 4 |
| 82 | New Mexico | 3.9 | 3 | 77,236 | 3 |
| 83 | Northern Utah, Southern Idaho | 3.6 | 1 | 27,476 | 1 |
| 84 | Northern California | 3.5 | 4 | 115,026 | 7 |
| 85 | Central Illinois | 2.1 | 1 | 46,797 | 3 |
| 86 | South-Eastern Texas | 1.4 | 1 | 69,949 | 3 |
a ID represents the state(s) to which the majority of colleges and universities in the cluster belong.