Table 1.
Counts and ratesa (per 100,000 population per year) of acute heat illness (ICD-9-CM code 992.xx) with 95% CIs by first-listed and secondary diagnosis and ED disposition.b
| ED disposition | First-listed diagnosis | Secondary diagnoses | Combined |
|---|---|---|---|
| Treat-and-release | |||
| n | 202,829 (192,015–213,643) | 85,046 (79,493–90,599) | 287,875 (272,134–3,036,152) |
| Rate | 13.3 | 5.6 | 18.9 |
| Admit-to-hospital | |||
| n | 18,811 (17,494–20,127) | 19,581 (18,426–20,736) | 38,392 (36,051–40,732) |
| Rate | 1.2 | 1.3 | 2.5 |
| Died-in-the-ED | |||
| n | 99 (68–129) | 131 (86–177) | 230 (187–274) |
| Rate | 0.007 | 0.009 | 0.015 |
| Total | |||
| n | 221,739 (209,577–233,899) | 104,758 (98,055–111,512) | 326,497 (308,372–344,658) |
| Rate | 14.6 | 6.9 | 21.5 |
| aSum of total U.S. population for 2006 through 2010 used as denominator; population estimates used for each year were 309,349,689 (2010), 306,771,529 (2009), 304,093,966 (2008), 301,231,207 (2007), 298,379,912 (2006) (AHRQ 2012). bED visits between 1 May and 30 September in a calendar year. | |||