Table 1.

Non-malignant meningioma incidence in SEER18, 2004–2017, ages 20+ years.

			Method of diagnosis
	TOTAL		Microscopic		Radiographic
Characteristic	Cases	Rate	Cases	Rate	Cases	Rate	% RGCa
TOTAL	108,043	12.12	44,711	7.97	60,592	6.84	56
Sex
Male	28,117	7.07	13,022	3.10	14,406	3.79	54
Female	79,926	16.49	31,689	6.71	46,186	9.37	57
Race/Ethnicity
NH White	73,603	12.33	28,892	5.00	42,908	7.03	57
NH Black	12,363	14.41	5,165	5.56	6,861	8.43	59
NH AI/AN	652	10.85	288	4.35	335	5.99	55
NH API	8,554	10.35	3,914	4.52	4,399	5.52	53
Hispanic	12,025	10.25	6,088	4.59	5,640	5.37	52
Age
20–39	6,699	2.12	4,367	1.38	2,211	0.70	33
40–64	44,648	10.76	24,279	5.94	19,500	4.62	43
65–79	35,697	33.01	12,962	11.72	21,832	20.43	62
80+	20,999	50.92	3,103	7.69	17,049	41.20	81
Size
<2cm	38,491	4.32	5,638	0.63	31,959	3.59	83
≥ 2cm	49,297	5.52	28,688	3.18	19,881	2.26	41
Unknown size	20,255	2.28	10,385	1.16	8,752	0.99	43
Age<65 by size
<2cm	16,739	2.13	3,682	0.48	12,685	1.60	75
≥ 2cm	24,336	3.14	18,390	2.40	55,734	0.71	23
Unknown size	10,272	1.33	6,574	0.86	3,292	0.42	32
Age 65+ by size
<2cm	21,752	14.48	1,956	1.29	19,272	12.84	89
≥ 2cm	24,961	16.59	10,298	6.83	14,147	9.42	57
Unknown size	9,983	6.66	3,811	2.54	5,460	3.65	55
Laterality
Right	42,776	4.80	16,987	1.89	25,010	2.82	59
Left	43,078	4.83	17,081	1.90	25,153	2.84	59
Other/Unknown	22,189	2.49	10,643	1.18	10,429	1.18	47
Year of diagnosis
2004–2008	30,864	10.60	14,862	5.02	15,274	5.33	50
2009–2013	40,288	12.59	16,276	5.03	22,960	7.22	57
2014–2017	36,891	13.20	13,573	4.86	22,358	8.00	61

^a% RGC: Percent radiographically confirmed based on rates. Incidence rates are age-adjusted to the 2000 US population standard and displayed per 100,000 person-years. NH: non-Hispanic; AI/AN: American Indian/Alaska Native; API: Asian/Pacific Islander