Table I.

One-year incidence of tinea capitis among children aged <18 years—United States, July 1, 2016 to December 31, 2021

Characteristic	n	Population at risk	Incidence (per 10,000 person-years)	95% CI
Overall	6391	3,929,156	16.3	15.9–16.7
Age, y*
<1	22	15,504	14.2	8.3–20.1
1	242	159,186	15.2	13.3–17.1
2	384	170,369	22.5	20.3–24.8
3	485	185,772	26.1	23.8–28.4
4	588	200,081	29.4	27.0–31.8
5	638	202,212	31.6	29.1–34.0
6	589	206,186	28.6	26.3–30.9
7	539	214,194	25.2	23.0–27.3
8	446	225,546	19.8	17.9–21.6
9	464	234,907	19.8	18.0–21.5
10	382	244,463	15.6	14.1–17.2
11	389	259,950	15.0	13.5–16.5
12	243	264,717	9.2	8.0–10.3
13	242	263,358	9.2	8.0–10.3
14	202	260,887	7.7	6.7–8.8
15	205	266,433	7.7	6.6–8.7
16	194	276,827	7.0	6.0–8.0
17	137	278,564	4.9	4.1–5.7
Sex
Male	4177	1,998,956	20.9	20.3–21.5
Female	2214	1,930,200	11.5	11.0–11.9
US census region of residence
South	3852	1,714,786	22.5	21.8–23.2
Midwest	1069	847,719	12.6	11.9–13.4
Northeast	921	662,445	13.9	13.0–14.8
West	512	682,985	7.5	6.8–8.1
Unknown	37	21,221	17.4	11.8–23.0
Urban-rural status of residence
Non-rural	5750	3,498,945	16.4	16.0–16.9
Rural	608	413,537	14.7	13.5–15.9
Unknown	33	16,674	19.8	13.0–26.5

^*Patient age at the beginning of the 1-year follow-up period. Median age at time of diagnosis was 7 years (interquartile range: 5 to 11).