Table 4.
VHI Outcomes by ELS Classification for Early Glottic Tumors.a
| ELS I&II
|
ELS III
|
||||
|---|---|---|---|---|---|
| Author | n | VHIb | n | VHIb | P |
| Chu et al37 | 25 | 7.55 ± 9.59c | 7 | 16.86 ± 17.22 | .21 |
| Keilman et al38 | 1 | 4 | 7 | 8.14 ± 8.17 | NA |
| Roh et al39 | 46d | 11.4 ± 11.8 | 20 | 18.3 ± 22.5 | .20 |
| Tomifuji et al36 | 15 | 23.9 ± 17.4 | 21 | 22.3 ± 18.7 | .79 |
| Nunez Batalla et al31 | 0 | — | 19 | 28.79 ± 19.8 | NA |
| Sjogren et al40 | 18 | 19.18 ± 18.75 | 0 | — | NA |
| Total | 105 | 74 | |||
Abbreviations: ELS, European Laryngological Society; NA, not applicable; VHI, Voice Handicap Index.
a
T1 stage for each study.
b
Mean ± standard deviation.
c
Pooled standard deviation.
d
Carcinoma in situ staging, n = 16.