Interval between Intra-Arterial Infusion Chemotherapy and Surgery for Locally Advanced Oral Squamous Cell Carcinoma: Impacts on Effectiveness of Chemotherapy and on Overall Survival

Table 1

Patients’ characteristics.

Characteristics	Number of patients who completed treatment (%)	Number of all patients (%)
Number of patients	126	1,459
Median age (years)	50.6	52.5
Age range (years)	28–82	22–87
Differentiation
I	74 (72.5)	760 (64.0)
II	26 (25.5)	394 (33.2)
III	2 (2)	33 (2.7)
T stage
1	1 (0.8)	341 (23.4)
2	12 (9.5)	420 (28.8)
3	8 (6.3)	122 (8.4)
4	1 (0.8)	3 (0.2)
4A	104 (82.5)	563 (38.6)
4B	0 (0)	8 (0.5)
N stage
0	21 (16.7)	633 (43.4)
1	55 (43.7)	505 (34.6)
2	49 (38.9)	308 (21.1)
3	1 (0.8)	11 (0.8)
IAIC-OP interval
Range (months)	0.4–14	0–14.8
≥90 days	54 (42.9)	132 (45.2)
<90 days	72 (57.1)	160 (54.8)