Table 1. Demographic and clinical characteristics of the study population.

Age (mean +/- SD)	64 ± 10.05
Gender [n (%)]
Male	84 (96.6)
Female	3 (3.4)
Primary tumor site [n (%)]
Glottis	27 (31.03)
Oropharynx	23 (26.44)
Hypopharynx	17 (19.54)
Supraglottic	10 (11.49)
Oral cavity	10 (11.49)
Smoking [n (%)]	24 (27.6)
Drinking [n (%)]	3 (3.4)
Smoking + drinking [n (%)]	49 (56.3)
Neck dissection [n (%)]
II-IV	69 (79.3)
II-V	10 (11.5)
I-III	8 (9.2)
Number of nodes removed [n (%)]
15	77 (88.5%)
<15	10 (11.5)