Table 2. Multivariate COX models and Fine-Gray models for survival analysis.

		COX-CSS		COX-OS		FGM-CSS
	no-ACRT	HR (95% CI)	p	HR (95% CI)	p	HR (95% CI)	p
Model 1	Ref	1.111 (0.962–1.283)	0.154	1.010 (0.885–1.153)	0.883	1.135 (0.984–1.308)	0.082
Model 2	Ref	1.105 (0.957–1.277)	0.174	1.009 (0.884–1.152)	0.891	1.127 (0.977–1.299)	0.100
Model 3	Ref	1.102 (0.954–1.274)	0.187	1.010 (0.884–1.154)	0.882	1.124 (0.975–1.297)	0.110
Model 4	Ref	1.097 (0.949–1.268)	0.211	1.007 (0.881–1.150)	0.920	1.125 (0.975–1.297)	0.110
Model 5	Ref	1.087 (0.940–1.257)	0.259	0.998 (0.874–1.141)	0.982	1.118 (0.969–1.290)	0.130

Model 1: no adjustment

Model 2: adjusted for age, gender, year of diagnosis

Model 3: model 2 + T classification, N classification, TNM stage

Model 4: model 3 + tumor histology, histological grade

Model 5: model 4 + race, marital status.

no-ACRT group was set as a reference.

ACRT, adjuvant chemotherapy or radiotherapy; Ref, reference; CSS, cancer-specific survival; OS, overall survival; FGM: Fine-Gray model; HR, hazard ratio; CI, confidence interval.