Table 2. Univariate analysis of clinicopathological prognostic factors and 5-year recurrence-free survival.

Characteristic	5-Year RFS	95% CI	p-value
Age (yr)			0.387
<35	81.5	62.8-91.4
35-60	87.9	83.4-91.3
>60	92.9	74.4-98.2
Tumor size (cm)			0.056
≤2	89.4	84.5-92.9
>2	83.9	75.5-89.5
Histopathology			0.072
Squamous cell carcinoma	88.1	82.6-91.9
Adenocarcinoma	90.4	83.2-94.6
Adenosquamous carcinoma	77.1	47.9-91.3
Lymph vascular space invasion			0.123
Yes	81.9	70.6-89.2
No	89.4	85.0-92.6
Deep stromal invasion			<0.001
Yes	76.1	63.3-84.9
No	90.8	86.5-93.7
Lymph node metastasis			<0.001
Yes	68.8	40.5-85.6
No	88.5	84.4-91.6
Parametrial involvement			<0.001
Yes	63.5	37.0-81.3
No	89.1	85.0-92.1
Resection margin involvement			0.023
Yes	69.1	39.8-86.3
No	88.6	84.5-91.7
Adjuvant therapy			0.041
No	89.7	85.3-92.8
Radiation	78.3	64.0-87.4
Chemotherapy	100.0	-
Concurrent chemoradiation	60.1	8.1-90.2
Surgical waiting time (wk)			0.230
≤4	83.6	74.0-89.8
>4	89.1	84.3-92.5
Surgical waiting time (wk)			0.551
≤8	86.8	81.5-90.6
>8	89.6	82.1-94.1

CI, confidence interval; RFS, recurrence-free survival.