Table 2 Sensitivity analyses for the incidence of type 1 diabetes mellitus in the United States by age category, 2001–2015

From: Fluctuations in the incidence of type 1 diabetes in the United States from 2001 to 2015: a longitudinal study

	Vanderloo algorithm^a			Rapid onset^b
Age category, years^c	N, incident cases	Incidence rate^d	95% Confidence intervals	N, incident cases	Incidence rate^d	95% Confidence intervals
< 5	1944	23.0	22.0–24.1	1873	22.2	21.2–23.2
5–9	2966	29.9	28.9–31.0	2895	29.2	28.2–30.3
10–14	4466	43.6	42.3–44.8	4499	43.9	42.6–45.2
15–19	3399	33.3	32.1–34.4	3511	34.4	33.2–35.5
20–24	1746	17.9	17.1–18.8	1608	16.5	15.7–17.3
25–29	1943	17.5	16.7–18.3	1673	15.0	14.3–15.8
30–34	2095	16.9	16.2–17.6	1693	13.7	13.0–14.3
35–39	2418	18.8	18.0–19.5	1788	13.9	13.2–14.5
40–44	2741	20.4	19.7–21.2	1843	13.7	13.1–14.4
45–49	3090	23.4	22.5–24.2	2005	15.2	14.5–15.8
50–54	3481	28.4	27.5–29.4	2063	16.9	16.1–17.6
55–59	3436	33.1	32.0–34.3	2012	19.4	18.6–20.3
60–64	3356	43.2	41.7–44.7	1864	24.0	22.9–25.1
Total	37,081	26.1	25.8–26.4	29,327	20.7	20.4–20.9

^aAll incident cases < 10 years of age; for those ≥ 10 years, insulin only within 730 days from
diagnosis
^bFirst diagnosis of type 1 diabetes and the first insulin prescription filled were within 6 months
^cAge at first diagnosis
^dIncident cases of type 1 diabetes per 100,000 person-years of healthcare coverage

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