Effect of Coronary Computed Tomography Angiography Disease Burden on the Incidence of Recurrent Chest Pain

Table 5

Baseline demographic data, outcomes, and cost analysis based on burden of CAD in the LCX.

	No LCX CAD; 𝑛 = 1029	Nonobstructive LCX; 𝑛 = 441	Obstructive LCX; 𝑛 = 48	𝑃 value
Age	51.3 ± 14.2	56.5 ± 13.2	62.9 ± 13.6	<0.001
Male gender	610 (59.3)	270 (61.2)	39 (81.3)	0.009
Chest pain reevaluation, 𝑛 (%)	104 (10.1)	62 (14.1)	8 (16.7)	0.048
Time to reevaluation, days	358 ± 345	322 ± 311	441 ± 400	0.586
Hospitalization at reevaluation, 𝑛 (%)	47 (4.6)	34 (7.7)	4 (8.3)	0.039
Hospital LOS, days	1.2 ± 0.7	1.4 ± 0.9	1.5 ± 0.6	0.382
Repeat testing, 𝑛 (%)	49 (4.8)	34 (7.7)	7 (14.6)	0.003
Tests per patient, mean	0.05 ± 0.3	0.1 ± 0.4	0.2 ± 0.5	0.001
Cost per patient, mean	$15 ± 85	$35 ± 144	$75 ± 201	<0.001
All-cause mortality, 𝑛 (%)	3 (0.3)	0 (0)	1 (2.1)	0.027
Stroke, 𝑛 (%)	4 (0.4)	7 (1.6)	2 (4.2)	0.003
MI, 𝑛 (%)	4 (0.4)	11 (2.5)	1 (2.1)	0.001
Late revascularization, 𝑛 (%)	1 (0.1)	3 (0.7)	1 (2.1)	0.020
Composite MACE, 𝑛 (%)	12 (1.2)	17 (3.9)	5 (10.4)	<0.001

LCX: left circumflex coronary artery.