Association between thyroid function and gallstone disease

Table 4 The association between serum TSH levels and cholelithiasis according to sex

	Regression models	Low (<0.3 mIU/L)OR (95%CI)	Serum TSH normal (0.3–3.0 mIU/L)OR (95%CI)	High (> 0.3 mIU/L)OR (95%CI)
Males;	Crude	1.89 (1.34–2.67)1	1.0 (Reference)	2.90 (0.90–9.49)
OR	Adjusted for confounding variables2	1.40 (0.96–2.02)	1.0 (Reference)	3.77 (1.06–13.41)1
Females;	Crude	1.42 (1.01–2.01)1	1.0 (Reference)	1.11 (0.49–2.52)
OR	Adjusted for confounding variables2	0.89 (0.61–1.32)	1.0 (Reference)	0.91 (0.38–2.19)

¹Logistic regression analysis,

²Age (decades), education (three categories), physical activity (yr/n), smoking (three categories), diabetes (yr/n), body mass index (cont.). OR denotes odds ratio; 95%–CI, confidence interval.