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| Configuration | Frequency n (%) | Caustic cocktail n (%) |
| Back-mount | 312 (76) | 167 (53) |
| Side-mount | 34 (8) | 30 (88) |
| Chest-mount | 32 (8) | 20 (63) |
| Back-mount and side-mount | 19 (5) | 12 (63) |
| Back-mount and chest-mount | 9 (2) | 4 (44) |
| All three configurations | 1 (0) | 1 (100) |
| Missing | 6 (1) | 0 (0) |
