Table 3. American Heart Association scores of Rater 1 vs Rater 2, independent of field strength.

		Rater 2					Total
		0	I–II	III	IV–V	≥ VI
Rater 1	0	8	0	0	0	0	8
	I–II	0	7	2	0	0	9
	III	0	0	13	6	0	19
	IV–V	0	0	0	6	0	6
	≥VI	0	0	0	0	0	0
Total		8	7	15	12	0	42