Table 2.

Cox regression analysis of survival in patients with EAC from 1984 to 2013.

	Variable	Relative risk (95% CI)	p value
All 1984–2013
	Univariable
	Sex	1.111 (1.072–1.151)	<0.001
	Age	1.018 (1.017–1.019)	<0.001
	Race	1.197 (1.112–1.228)	<0.001
	SES	1.000 (1.000–1.000)	<0.001
	Multivariate
	Sex	1.028 (0.992–1.065)	0.132
	Age	1.018 (1.017–1.019)	<0.001
	Race	1.240 (1.151–1.336)	<0.001
	SES	1.000 (1.000–1.000)	<0.001
All 1984–1993
	Univariable
	Sex	1.159 (1.038–1.295)	0.009
	Age	1.016 (1.012–1.019)	<0.001
	Race	1.135 (0.890–1.447)	0.307
	SES	1.000 (0.9999–1.000)	0.925
	Multivariate
	Sex	1.052 (0.940–1.178)	0.376
	Age	1.015 (1.012–1.019)	<0.001
All 1994–2003
	Univariable
	Sex	1.118 (1.053–1.188)	<0.001
	Age	1.018 (1.017–1.021)	<0.001
	Race	1.308 (1.153–1.484)	<0.001
	SES	1.000 (1.000–1.000)	<0.001
	Multivariate
	Sex	1.017 (0.956–1.081)	0.600
	Age	1.019 (1.017–1.021)	<0.001
	Race	1.313 (1.156–1.492)	<0.001
	SES	1.000 (1.000–1.000)	<0.001
All 2004–2013
	Univariable
	Sex	1.096 (1.045–1.149)	<0.001
	Age	1.017 (1.016–1.019)	<0.001
	Race	1.151 (1.043–1.269)	0.005
	SES	1.000 (1.000–1.000)	<0.001
	Multivariate
	Sex	1.028 (0.980–1.079)	0.251
	Age	1.018 (1.016–1.019)	<0.001
	Race	1.192 (1.080–1.315)	0.001
	SES	1.000 (1.000–1.000)	<0.001

95% CI, 95% confidence interval; SES, socioeconomic status.