TABLE 1.

Included 2006–2021 HRI claim characteristics.

Characteristic	Number of HRI claims (N = 1241)	Percent of HRI claims, %	Number of “cluster” (≥10/day) claims (n = 96)	Percent of “cluster” claims, %
Claim status
Rejected	430	34.6	32	33.3
Accepted	811	65.4	64	66.7
Noncompensable	741	91.4	59	92.2
Compensable	70	8.6	5	7.8
Age (years)
<25	308	24.8	25	26.0
25–34	355	28.6	27	28.1
35–44	271	21.8	25	26.0
45–54	190	15.3	10	10.4
55–64	100	8.1	7	7.3
65+	17	1.4	2	2.1
Sex
Male	994	80.1	72	75.0
Female	247	19.9	24	25.0
Time of year
May–Sep	1181	95.2	96	100.0
Oct-Apr	60	4.8	0	0.0
Work setting a
Definitely outdoor	651	52.5	48	50.0
Probably outdoor	85	6.9	10	10.4
Unlikely outdoor	212	17.1	22	22.9
Uncertain	291	23.5	16	16.7

Abbreviation: HRI, heat-related illness.

^aTwo observations missing.