Table 2 Pooled features of included studies
Characteristics | N tot | N (%) |
|---|---|---|
Patients | 948 | |
Gender | ||
Females | 948 | 95 (10.0) |
Males | 841 (88.8) | |
Unspecified | 12 (1.2) | |
Age | 911 | |
Mean (years) | 60.3 | |
Median (years) | 60.8 | |
Risk factors | ||
Tobacco | 144 | 111 (77.1) |
Alcohol | 18 | 2 (11.1) |
Anatomical location | ||
Glottis | 952 | 749 (78.7) |
Supraglottis | 118 (12.4) | |
Subglottis | 8 (0.8) | |
Transglottis | 38 (4.0) | |
Ary-epiglottic fold | 2 (0.2) | |
Unspecified | 37 (3.9) | |
cTNM staging | ||
cT1 | 532 | 223 (41.9) |
cT2 | 155 (29.1) | |
cT3 | 140 (26.3) | |
cT4 | 14 (2.7) | |
N+ | 169 | 3 (1.8) |
M+ | 169 | 0 (0) |
Stages | ||
I | 281 | 141 (50.2) |
II | 91 (32.4) | |
III | 39 (13.9) | |
IV | 10 (3.5) |