Table 2.

Descriptive Characteristics of Patients Diagnosed With Benign Thyroid Conditions, Denmark, 1978–2013

	Hyperthyroidism	Hypothyroidism	Thyroiditis	Nontoxic Nodular Goiter	Simple Goiter	Other/Unspecified Goiter	Thyroid Adenoma
Total no. of subjects	85,169	63,143	12,532	65,782	11,582	21,953	6481
Sex
Men	17%	15%	16%	16%	15%	14%	25%
Women	83%	85%	84%	84%	85%	86%	75%
Age at benign thyroid disease diagnosis
Median, y (IQR)	57.3 (42.7–70.9)	58.9 (42.2–73.4)	45.0 (33.8–56.2)	49.1 (39.2–60.3)	47.1 (35.9–60.0)	48.4 (37.7–61.2)	46.4 (36.0–56.9)
Calendar year at benign thyroid disease diagnosis
1978–1982	9%	5%	4%	11%	1%	13%	8%
1983–1987	7%	5%	4%	10%	1%	9%	10%
1988–1992	8%	7%	5%	9%	2%	7%	11%
1993–1997	16%	11%	12%	16%	23%	13%	17%
1998–2002	21%	17%	17%	17%	25%	19%	14%
2003–2007	21%	24%	24%	16%	23%	23%	15%
2008–2013	18%	32%	34%	21%	24%	16%	26%
Follow-up
Median, y (IQR)	9.1 (4.7–14.7)	6.3 (3.2–11.0)	7.8 (4.0–13.9)	11.6 (5.4–18.9)	9.4 (4.8–14.9)	10.6 (6.0–17.2)	10.7 (4.6–18.5)
Comorbid thyroid diseases
Hyperthyroidism	—	12%	10%	7%	12%	7%	4%
Hypothyroidism	2%	—	26%	2%	3%	2%	1%
Thyroiditis	1%	6%	—	1%	1%	1%	1%
Nontoxic nodular goiter	5%	8%	6%	—	23%	16%	24%
Simple goiter	1%	2%	1%	3%	—	3%	2%
Other/unspecified goiter	3%	3%	2%	8%	10%	—	5%
Thyroid adenoma	0.3%	0.5%	1%	2%	2%	1%	—

Abbreviation: IQR, interquartile range.