Table 2. Correlation Between Survival and Patient, Tumor and Treatment Characteristics^a.

Variables	No	Mean OS, mon	P Value	No	Mean EFS, mon	P Value
Gender			0.785			0.425
Female	23	49		24	42
Male	80	55		81	48
Age, y			0.130			0.779
≤ 50	28	61		29	50
> 50	75	51		76	46
BMI classification			0.808			0.035
Bellow normal	13	46		13	26
Normal	61	56		62	51
Above normal	29	47		30	45
Primary tumor site			0.417			0.096
Larynx	57	59		58	54
Non-larynx	46	49		47	40
T-stage			0.039			0.742
T1/T2	56	59		57	48
T3/T4	46	47		47	45
N-stage			0.101			0.043
N0/N1	50	57		52	55
N2/N3	50	49		50	40
Treatment modality			0.930			0.654
Surgical	58	56		59	48
Non-surgical	38	54		39	50

^aAbbreviations: BMI, body mass index; EFS, event free survival; N-stage, lymph node stage; OS, overall survival; T-stage, tumor stage.