Table 3.
Summaries of prescriber clusters obtained from the PAM clustering algorithm.
| Cluster | Representativea Specialty (%) |
Representativea Region (%) |
Median age |
Median Hydrocodone Rx | Median Oxycodone Rx | Median Tramadol Rx | Median Totals Rx | N |
|---|---|---|---|---|---|---|---|---|
| Sample | − | − | 53 | 362 | 176 | 191 | 894 | 10,000 |
| 1 | Pain Medicine (82.4) | MW (100) | 52 | 879 | 622 | 260 | 2,850 | 142 |
| 2 | Pain Medicine (96.8) | NE (100) | 47 | 241 | 1,069 | 178 | 1,996 | 94 |
| 3 | Pain Medicine (98.5) | S (100) | 52 | 1,034 | 1,008 | 287 | 3,656 | 270 |
| 4 | Pain Medicine (92.2) | W (100) | 46 | 536 | 649 | 148 | 2,049 | 115 |
| 5 | Physical Med/Rehab (80.9) | NE (100) | 46 | 190 | 531 | 184 | 1,165 | 89 |
| 6 | Physical Med/Rehab (97.2) | S (97.2) | 47 | 749 | 555 | 263 | 2,313 | 144 |
| 7 | Physical Med/Rehab (84.1) | W (92.7) | 53 | 650 | 682 | 183 | 2,170 | 82 |
| 8 | Neurology (97) | S (95.5) | 54 | 407 | 235 | 218 | 1,210 | 67 |
| 9 | General Practice (78.1) | S (73.4) | 69 | 410 | 160 | 159 | 1,062 | 128 |
| 10 | Family Medicine (99.3) | MW (100) | 55 | 405 | 137 | 238 | 930 | 884 |
| 11 | Family Medicine (97.2) | NE (100) | 56 | 222 | 275 | 182 | 864 | 359 |
| 12 | Family Medicine (99.9) | S (100) | 53 | 413 | 114 | 294 | 1,006 | 1,350 |
| 13 | Family Medicine (98) | W (100) | 52 | 378 | 179 | 158 | 869 | 659 |
| 14 | Internal Medicine (99.8) | MW (100) | 52 | 377 | 116 | 236 | 890 | 516 |
| 15 | Internal Medicine (100) | NE (100) | 58 | 161 | 315 | 172 | 838 | 449 |
| 16 | Internal Medicine (97.8) | S (100) | 57 | 336 | 123 | 297 | 961 | 944 |
| 17 | Internal Medicine (98) | W (100) | 54 | 362 | 160 | 166 | 845 | 454 |
| 18 | Dentist (91.4) | MW (97.5) | 54 | 685 | 32 | 16 | 952 | 81 |
| 19 | Dentist (95.9) | S (93.8) | 48 | 490 | 12 | 26 | 841 | 146 |
| 20 | Dentist (84.4) | W (90.9) | 49 | 537 | 65 | 8 | 693 | 77 |
| 21 | Nurse Practitioner (84.3) | MW (99) | 46 | 322 | 171 | 195 | 836 | 102 |
| 22 | Nurse Practitioner (97) | S (100) | 47 | 285 | 70 | 258 | 783 | 99 |
| 23 | Nurse Practitioner (54.9) | W (98.2) | 62 | 309 | 172 | 131 | 745 | 113 |
| 24 | Orthopedics (99.2) | MW (100) | 51 | 374 | 205 | 145 | 848 | 260 |
| 25 | Orthopedics (92) | NE (100) | 52 | 120 | 368 | 115 | 695 | 113 |
| 26 | Orthopedics (99.5) | S (100) | 52 | 358 | 271 | 177 | 901 | 586 |
| 27 | Orthopedics (92.3) | W (100) | 56 | 301 | 232 | 104 | 704 | 209 |
| 28 | Physician Assistant (89.8) | MW (88.2) | 39 | 290 | 219 | 121 | 718 | 127 |
| 29 | Physician Assistant (91.7) | S (96.2) | 43 | 236 | 121 | 172 | 720 | 156 |
| 30 | Surgery (69.6) | MW (88.4) | 59 | 411 | 135 | 64 | 773 | 112 |
| 31 | Surgery (95.5) | S (98.1) | 52 | 348 | 155 | 43 | 657 | 266 |
| 32 | Emergency Medicine (97.2) | MW (99.1) | 52 | 414 | 89 | 71 | 682 | 107 |
| 33 | Emergency Medicine (96.6) | S (98.7) | 44 | 354 | 100 | 133 | 727 | 472 |
| 34 | Emergency Medicine (77.9) | W (98.6) | 46 | 363 | 105 | 48 | 632 | 140 |
| 35 | Oncology (87.5) | S (90.9) | 50 | 167 | 318 | 35 | 701 | 88 |
Dentists include oral surgeons. Abbreviations: Prescriptions (Rx), Physical Medicine and Rehabilitation (Physical Med/Rehab), Midwest (MW), Northeast (NE), South (S), West (W).
a
Indicates the majority category that appeared in more than half the prescribers within a given cluster. The corresponding percent is reported in parentheses.