Meta-analysis outcome data for overall tandem occlusions treated with mechanical thrombectomy, intracranial first versus extracranial first approaches, and stenting versus angioplasty-only approaches
| Author, year | Patients, n | Age, mean years | Female, n | IV Thrombolysis, n | Initial NIHSS | Onset to arrival | Intracranial ICA | M1 | M2 | Stenting, n | Angioplasty, n | Extracranial first, n | Intracranial first, n |
| Rangel-Castilla, 20175 | 45 | 64 | 18 | 15 | 14 | 139 | 18 | 20 | 7 | 38 | 7 | 38 | 7 |
| Sallustio, 20177 | 72 | 66 | 28 | 39 | 19 | NA | 19 | 45 | 8 | 35 | 37 | NA | NA |
| Mpotsaris, 20178 | 63 | 67 | 14 | 33 | 14 | 212 | 19 | 35 | 9 | 63 | 0 | 17 | 46 |
| Gliem, 20179 | 16 | 72 | 9 | 16 | 15 | 89 | 8 | 8 | 0 | NA | NA | NA | NA |
| Al-Mufti, 201710 | 8 | 66 | 3 | NA | NA | NA | 0 | 8 | 0 | 8 | NA | 8 | 0 |
| Akpinar, 201711 | 15 | 62 | 3 | 8 | 13 | NA | 3 | 11 | 0 | 0 | 15 | 15 | 0 |
| Sanak, 201612 | 42 | NA | 14 | NA | 19 | NA | NA | NA | NA | NA | NA | NA | NA |
| Marnat, 201613 | 20 | 53 | 6 | 15 | 18 | NA | NA | NA | NA | 5 | NA | 0 | 20 |
| Grigoryan, 201614 | 100 | 64 | 36 | 40 | 18 | 438 | 31 | 53 | 10 | 67 | NA | NA | NA |
| Fahed, 201615 | 70 | 63 | 21 | 34 | 16 | NA | NA | NA | NA | 37 | 33 | NA | NA |
| Yoon, 201516 | 42 | 71 | 3 | 27 | 14 | NA | NA | NA | NA | 42 | 0 | 42 | 0 |
| Steglich-Arnholm, 201517 | 47 | 64 | 13 | 40 | 16 | 113 | 14 | 32 | 1 | 47 | 0 | NA | NA |
| Spiotta, 201518 | 16 | 68 | 8 | 8 | 13 | NA | 3 | 10 | 2 | 16 | 0 | 16 | 0 |
| Puri, 201519 | 28 | 59 | 9 | 7 | 18 | NA | NA | NA | NA | 27 | NA | 24 | 4 |
| Parthasarathy, 201520 | 7 | 51 | 4 | 2 | 18 | NA | NA | NA | NA | NA | NA | 0 | 7 |
| Maurer, 201521 | 42 | 68 | 13 | 33 | 13 | NA | 3 | 35 | 5 | 38 | 4 | NA | NA |
| Lockau, 201522 | 37 | 63 | 10 | 20 | 17 | NA | 15 | 19 | 3 | 37 | 0 | 12 | 25 |
| Duwicquet, 201523 | 13 | 62 | NA | 9 | 13 | NA | NA | NA | NA | 13 | 0 | 13 | 0 |
| Cohen, 201524 | 24 | 66 | 4 | NA | 20 | NA | 6 | 17 | 0 | 24 | 0 | 24 | 0 |
| Heck, 201525 | 16 | NA | NA | 6 | 18 | NA | 8 | 8 | 0 | NA | NA | NA | NA |
| Lescher, 201526 | 39 | 68 | 23 | 29 | 14 | NA | 16 | NA | NA | 9 | 30 | 0 | 39 |
| Behme, 201527 | 170 | 64 | 51 | 122 | 15 | 98 | 54 | 99 | 17 | 170 | 0 | 151 | 19 |
| Estavez-Fraga, 201528 | 11 | 61 | 1 | NA | 12 | NA | NA | NA | NA | 11 | 0 | NA | NA |
| Duijsens, 201429 | 10 | NA | NA | NA | NA | NA | 3 | 7 | 0 | 7 | NA | 10 | 0 |
| Tutuncu, 201430 | 14 | 62 | 7 | 14 | 19 | NA | 2 | 12 | 0 | 4 | 3 | NA | NA |
| Soize, 201431 | 11 | 69 | 4 | 6 | 19 | NA | NA | 11 | NA | NA | NA | NA | NA |
| Stampfl, 201432 | 24 | 67 | 3 | 22 | 18 | 230 | 13 | 11 | NA | 24 | 0 | 21 | 3 |
| Ruiz, 201333 | 27 | 65 | NA | 27 | 18 | NA | 3 | 17 | 7 | NA | NA | NA | NA |
| Nayak, 201334 | 18 | NA | 23 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| Mpotsaris, 201335 | 17 | 59 | NA | 14 | 17 | NA | 8 | 9 | 0 | 17 | 0 | 0 | 17 |
| Dalyai, 201336 | 3 | 61 | 3 | 2 | 13 | NA | 0 | 3 | 0 | 3 | 0 | 3 | 0 |
| Loudova, 201337 | 25 | NA | NA | 9 | 14 | NA | NA | 25 | NA | 9 | 0 | NA | NA |
| Machi, 201238 | 10 | 66 | 1 | NA | 17 | 123 | 6 | 4 | 0 | 6 | 1 | 4 | 6 |