Table 1 Automated external defibrillator prevalence at Washington State high schools.

	No AED	Has AED	Percentage with AED
Size classification*
4A	14	19	58
3A	8	19	70
2A	7	10	59
1A	7	4	36
B	18	12	40
Total	54	64	54
Location
Urban/inner city	12	8	40
Suburban	17	29	63
Rural	25	26	51
Total	54	63	54
Public	46	56	55
Private	8	7	47
Total	54	63	54

AED, automated external defibrillator.

*AED prevalence increases with larger school size, χ² test for trend  = 4.07 (1 df), p = 0.044.