Table 4. Multivariable Analysis for ORs with 95% CIs of Thyroid Cancer According to Clinical and US Characteristics.

	Adjusted OR	P	Adjusted OR*	P	Adjusted OR†	P
Age < 20 or > 60	0.812 (0.550, 1.199)	0.295	0.810 (0.548, 1.196)	0.288	0.810 (0.548, 1.195)	0.288
Male gender	1.994 (1.360, 2.925)	< 0.001	1.996 (1.362, 2.925)	< 0.001	1.994 (1.361, 2.921)	< 0.001
1st degree family history	1.278 (0.742, 2.203)	0.377	1.281 (0.743, 2.209)	0.373	1.283 (0.744, 2.211)	0.370
Solitary lesion on US	1.413 (1.014, 1.970)	0.041	1.409 (1.011, 1.965)	0.043	1.410 (1.012, 1.966)	0.043
Serum TSH level	1.046 (0.881, 1.242)	0.605
TSH grade				0.757
0.3–1.39			1
1.4–2.49			1.020 (0.729, 1.427)	0.907
2.5–4.99			1.176 (0.762, 1.816)	0.464
TSH grade
0.3–2.49					1
2.5–4.99					1.166 (0.776, 1.752)	0.461
US assessment	39.778 (27.953, 56.606)	< 0.001	39.870 (28.003, 56.765)	< 0.001	39.927 (28.065, 56.802)	< 0.001
C-statistics	0.874 (0.855, 0.894)		0.874 (0.855, 0.894)		0.874 (0.855, 0.894)

Numbers in parentheses are 95% CIs. ^*TSH levels were categorized into three groups: relatively low in normal range, mid-normal, relatively high in normal range, ^†TSH levels were categorized into two groups: low and mid normal, relatively high in normal range. 1st degree = first-degree, CIs = confidence intervals, OR = odds ratio, TSH = thyroid stimulating hormone, US = ultrasonography