Table 2. Prevalence of Hypothyroidism in Patients Taking Thyroid Hormone in 2015.

	Total			Men			Women
	Population	Events	Prevalencea	Population	Events	Prevalencea	Population	Events	Prevalencea
Total	51,834,660	826,258	15.94	25,933,249	133,515	5.15	25,901,411	692,743	26.75
Age group, yr
≤9	4,619,384	5,371	1.16	2,375,043	2,657	1.12	2,244,341	2,714	1.21
10–19	5,709,599	6,504	1.14	2,977,410	1,822	0.61	2,732,189	4,682	1.71
20–29	6,881,546	20,853	3.03	3,643,304	3,149	0.86	3,238,242	17,704	5.47
30–39	7,824,337	96,121	12.28	4,019,283	12,058	3.00	3,805,054	84,063	22.09
40–49	8,871,241	164,334	18.52	4,502,350	25,809	5.73	4,368,891	138,525	31.71
50–59	8,332,932	234,732	28.17	4,184,758	34,698	8.29	4,148,174	200,034	48.22
60–69	5,064,740	174,322	34.42	2,457,128	28,939	11.78	2,607,612	145,383	55.75
70–79	3,153,746	96,687	30.66	1,352,287	18,802	13.90	1,801,459	77,885	43.23
≥80	1,377,135	27,334	19.85	421,686	5,581	13.23	955,449	21,753	22.77

^aPrevalence was calculated by dividing the number of prevalent cases by the total population and presented per 1,000 population.