Table 2.

Final logistic regression model of risk factors for hyperthyroidism (total thyroxine [tT4] >50 nmol/l or tT4 between 30 and 50 nmol/l with thyroid-stimulating hormone <0.03 ng/ml and free T4 >50 pmol/l)

Variable	Category	OR	95% CI	P value
Age (years)	<12*	1.00	–	–
	>12	4.31	1.24–15.12	0.02
Canned food in diet	No*	1.00	–	–
	Yes	2.10	0.82–5.36	0.1

^*Reference category

OR = odds ratio; CI = confidence interval