Table 3. Multivariable cox regression analyses of survival in female thyroid cancer.

Characteristics	Variable	Cancer-specific survival			Overall survival
		HR (95% CI)	P		HR (95% CI)	P
Tumor size	≤1 cm	1	–		1	–
	>1 cm	1.578 (1.199–2.077)	<0.001		1.030 (0.934–1.137)	0.55
Race	Black	1	–		1	–
	White	0.761 (0.541–1.070)	0.116		0.736 (0.636–0.852)	<0.001
	Other	0.770 (0.520–1.140)	0.192		0.682 (0.565–0.822)	<0.001
Age, years	<55	1	–		1	–
	≥55	7.054 (5.562–8.946)	<0.001		6.195 (5.612–6.838)	<0.001
Median income	<$55,000	1	–		1	–
	≥$55,000	0.949 (0.736–1.224)	0.686		0.841 (0.753–0.940)	<0.001
Surgery performed	No	1	–		1	–
	Yes	0.153 (0.109–0.217)	<0.001		0.134 (0.108–0.167)	<0.001
Histology recode/pathological type	Medullary	1	–		1	–
	HCC	1.468 (0.902–2.390)	0.123		0.949 (0.695–1.296)	0.743
	Follicular	0.968 (0.613–1.529)	0.889		0.750 (0.564–0.998)	0.048
	Pap with Fv	0.500 (0.327–0.764)	0.001		0.626 (0.484–0.810)	<0.001
	Papillary	0.426 (0.291–0.624)	<0.001		0.618 (0.481–0.793)	<0.001
T stage	Tx	0.136 (0.033–0.560)	0.006		0.206 (0.075–0.562)	0.002
	T0	0.326 (0.125–0.850)	0.022		0.307 (0.160–0.591)	<0.001
	T1	0.178 (0.122–0.260)	<0.001		0.354 (0.288–0.436)	<0.001
	T2	0.251 (0.170–0.368)	<0.001		0.347 (0.279–0.431)	<0.001
	T3	0.428 (0.329–0.557)	<0.001		0.470 (0.395–0.560)	<0.001
	T4	1	–		1	–
N stage	Nx	0.753 (0.424–1.337)	0.333		1.144 (0.848–1.542)	0.379
	N0	0.700 (0.565–0.868)	0.001		1.004 (0.872–1.157)	0.954
	N1	1	–		1	–
M stage	Mx	0.210 (0.096–0.460)	<0.001		0.207 (0.135–0.319)	<0.001
	M0	0.243 (0.178–0.333)	<0.001		0.266 (0.211–0.335)	<0.001
	M1	1	–		1	–
Combined summary stage	Localized	1	–		1	–
	Regional	1.594 (1.180–2.152)	<0.001		0.994 (0.879–1.124)	0.92
	Distant	4.986 (3.247–7.658)	<0.001		2.133 (1.671–2.723)	<0.001

HCC, Hurthle cell carcinoma; Pap with Fv, papillary with follicular variant.