Table 4.

Association between mean TSH value and the incidence of thyroid cancer in general practices in Germany (univariate logistic regression)

TSH value (milli-international units per liter)	Thyroid cancer patients (%)	Non-cancer patients (%)	OR (95% CI)	P-value
Mean (SD)	2.6 (4.0)	1.8 (1.3)
<  0.3	8.0	3.1	2.94 (1.98–4.35)	< 0.001
0.3–4.2	77.9	91.9	Reference	< 0.001
4.3–6.0	4.5	2.9	1.79 (1.16–2.75)	0.009
6.1–10.0	3.1	0.7	4.96 (2.32–10.59)	< 0.001
> 10.0	5.3	0.4	15.87 (5.78–43.59)	< 0.001