Table 3.

Diagnostic accuracy of the 6 electrocardiographic criteria for LAE as compared to CT-based LAE by LAV and LAVI.

	LAV					LAVI
	Sensitivity	Specificity	PPV	NPV	Accuracy	Sensitivity	Specificity	PPV	NPV	Accuracy
P duration >110 ms	71%(60/84)	55%(46/84)	61%(60/98)	66%(46/70)	63%(106/168)	61%(51/84)	55%(46/84)	57%(51/89)	58%(46/79)	58%(97/168)
P to PR segment ratio	81%(68/84)	27%(23/84)	53%(68/129)	59%(23/39)	54%(91/168)	81%(68/84)	21%(18/84)	51%(68/134)	53%(18/34)	51%(86/168)
P wave area >4 ms × mV	73%(61/84)	19%(16/84)	47%(61/129)	41%(16/39)	46%(77/168)	75%(63/84)	20%(17/84)	48%(63/130)	45%(17/38)	48%(80/168)
PTFV1	49%(41/84)	54%(45/84)	51%(41/80)	51%(45/88)	51%(86/168)	48%(40/84)	51%(43/84)	49%(40/81)	49%(43/87)	49%(83/168)
Bifid	19%(16/84)	85%(72/84)	57%(16/28)	51%(72/140)	53%(88/168)	19%(16/84)	86%(72/84)	57%(16/28)	51%(72/140)	52%(88/168)
Biphasic	26%(22/84)	76%(64/84)	52%(22/42)	51%(64/126)	51%(86/168)	26%(22/84)	77%(65/84)	54%(22/41)	51%(65/127)	52%(87/168)

Abbreviations as in Table 1 and 3. PPV denotes positive predictive value; and NPV, negative predictive value.