Spatial variation in hyperthermia emergency department visits among those with employer-based insurance in the United States – a case-crossover analysis

Table 1 Descriptive statistics of patients with hyperthermia-related emergency department visit 2000–2010 (N = 11031)

Age	N	%	Month	N	%	Latitude ( ^o N)	N	%
<= 5 years	149	1	April	354	3	<30	1107	10
6-12 years	561	5	May	1009	9	<=30 & <32	666	6
13-18 years	1918	17	June	2505	23	<=32 & <34	3042	28
18-24 years	816	7	July	3089	28	<=34 & <36	1513	14
25-50 years	4502	41	August	3145	29	<=36 & <38	864	8
51-64 years	2220	20	September	929	8	<=38 & <40	1571	14
65+ years	865	8				<=40 & <42	1514	14
			US Climate region*			> = 42	754	7
Gender			Central	2249	20
Female	3502	32	East North Central	531	5	Weekday
Male	7529	68	Northeast	1239	11	Sunday	1549	14
			Northwest	83	1	Monday	1515	14
Hyperthermia DX			South	3253	29	Tuesday	1589	14
Primary	9262	82	Southeast	2454	22	Wednesday	1498	14
Secondary	1727	16	Southwest	340	3	Thursday	1419	13
			West	803	7	Friday	1402	13
			West North Central	79	1	Saturday	2059	19

ISSN: 1476-069X