Table 1.

Demographics and outcomes of patients presenting within 24- and six-hour windows following haboob event onset.

	All	24-hour haboob period			6-hour haboob period
		pre-	post-	P-value	pre-	post-	P-value
MVC injuries (# patients)	31,133	815	825	0.82	283	235	0.04
Age (mean years)	35.8	34.6	36.2	0.10	33.8	36.0	0.23
Gender (% male)	58.9	58.2	61.2	0.21	51.2	65.5	<0.001
Place of residence (% Arizona)	96.4	96.9	96.4	0.5	96.1	94.8	0.50
Transport (% heli vs ground ambo)	7.0	7.4	5.1	0.07	7.0	3.2	0.06
Total ED + admit LOS (days)	3.3	3.5	3.1	0.25	3.5	3.0	0.52
Total hospital charges (mean $)	65,760	63,913	63,104	0.88	60,631	63,056	0.82
Final outcome (% mortality)	4.1	2.8	3.0	0.80	1.1	4.3	0.02
Excluded (# patients)		143			4

MVC, motor vehicle collision; ED, emergency department; LOS, length of stay; heli, helicopter; ambo, ambulance.