The Impact of Radiation Dose on Preoperative Neoadjuvant Chemoradiotherapy Effects for Patients with Locally Advanced Squamous Cell Esophageal Carcinoma: A Propensity Score-Matched Retrospective Study

Table 1

Comparison of clinical data between high dose group and low dose group after propensity score matching.

	Control group (N = 21)	Study group (N = 21)	Statistical test value	P
Gender (male/female)	11/10	14/7	0.889	0.346
Age (y) ± SD	66.33 ± 10.67	65.14 ± 10.79	0.360	0.721
Lesion site
Upper thoracic segment	4	5	0.159	0.924
Middle thoracic segment	11	10
Inferior thoracic segment	6	6
Maximum diameter of lesion (cm) ± SD	4.29 ± 2.17	3.67 ± 2.44	0.869	0.390
TNM staging
II	10	6	1.615	0.204
III	11	15

SD: standard deviation.