TABLE 1.
Characteristics of ascents of 8000 m peaks.
| Ascents group | Number of ascents | Ascent altitude [m] ± SD | Summit days | Climbers’ origin (highlander/lowlander) | Sex (female/male) | Climbers’ Age ± SD (min-max) | Deaths on descent |
| ME-noO2 | 210 | 8848 | 111 | 63/147 | 7/203 | 35 ± 6 (20-55) | 13 (6%) |
| K2-noO2 | 213 | 8611 | 59 | 17/196 | 10/203 | 38 ± 7 (22-60) | 26 (12%) |
| wME-noO2 | 1 | 8848 | 1 | 1/0 | 0/1 | 39 | 0 |
| wK2-noO2 | 1 | 8611 | 1 | 1/0 | 0/1 | 37 | 0 |
| wH&H-noO2 | 10 | 8504 ± 43 | 4 | 4/6 | 0/10 | 38 ± 4 (30-45) | 0 |
| wL&H-noO2 | 50 | 8158 ± 42 | 19 | 3/47 | 1/49 | 32 ± 5 (22-47) | 2 (4%) |
| wL&K-noO2 | 14 | 8077 ± 38 | 5 | 1/13 | 1/13 | 39 ± 8 (28-58) | 3 (21%) |
| w8000-yesO2 | 29 | 8677 ± 192 | 11 | 13/16 | 0/29 | 32 ± 5 (26-46) | 4 (14%) |
| wME-yesO2 | 14 | 8848 | 7 | 1/14 | 0/14 | 32 ± 5 (26-45) | 1 (7%) |
| wK2-yesO2 | 9 | 8611 | 1 | 9/0 | 0/9 | 35 ± 6 (31-46) | 0 |
ME-noO2, Everest non-oxygen non-winter ascents; K2-noO2, K2 non-oxygen non-winter ascents; wME-noO2, Everest non-oxygen winter ascents; wK2-noO2, K2 non-oxygen winter ascents; wH&H-noO2, high Himalayan 8K peaks non-oxygen winter ascents; wL&H-noO2, low Himalayan 8K peaks non-oxygen winter ascents; wL&K-noO2, low Karakoram 8K peaks non-oxygen winter ascents; w8000-yesO2, 8K peaks oxygen-supported winter ascents; wME-yesO2, Everest winter oxygen-supported ascents; wK2-yesO2, K2 winter oxygen-supported ascents.