Pretreatment Serum Uric Acid as an Efficient Predictor of Prognosis in Men with Laryngeal Squamous Cell Cancer: A Retrospective Cohort Study

Table 1

Baseline demographics and lifestyle characteristics of laryngeal squamous cell cancer patients.

Covariates	Number of patients/mean
No. of individuals	814
Age at diagnosis (years), mean, range	60.66, 27-89
>60	399
≥60	415
Body mass index (kg/m^2), mean, range	22.94, 16.72-28.43
Male (%)	100%
Death events	191
Duration of follow-up (months), median, range	72, 3-116
Smoking history (yes/no)	570/244
Drinking history (yes/no)	309/505
Hypertension (yes/no)	229/585
Median recurrence (months), range	23, 1-95
T stage
T1	195
T2	328
T3	239
T4	52
N stage
N0	722
N1	31
N2	52
N3	9
TNM stage
I	195
II	302
III	216
IV	101
Tumour size (cm), mean, range	1.80, 0-6.5
Tumour size (≤2 cm/>2 cm)	511/303
Neck dissection (yes/no)	145/669
Operation therapy
Total laryngectomy	326
Partial laryngectomy	488
Tumour subsite
Supraglottic	179
Subglottic	11
Glottic	624