Table 1.

Clinical variables of the study population

	Squamous lesions (n = 62)	Squamous intraepithelial lesions (n = 30)	Squamous invasive lesions (n = 32)
Age (years) Mean ± SD	55.85 ± 14.74	52.23 ± 16.99	59.38 ± 11.55
Male patients	53 (85.5 %)	26 (86.67 %)	27 (84.4 %)
Positive H/O tobacco smoking	54 (87.1 %)	25 (83.3 %)	29 (90.6 %)
Location (supraglottic, glottic, subglottic)	12 (19.3 %), 37 (59.68 %), 13 (20.97 %)	7 (23.3 %), 16 (53.4 %), 7 (23.3 %)	5(15.6 %), 21 (65.6 %), 6 (18.8 %)

(SD Standard deviation)