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

Table 4

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

	No LAD CAD; 𝑛 = 747	Nonobstructive LAD; 𝑛 = 631	Obstructive LAD; 𝑛 = 140	𝑃 value
Age	48.6 ± 14.1	57.4 ± 12.9	58.6 ± 12.2	<0.001
Male gender	448 (60)	380 (60.2)	91 (65)	0.524
Chest pain reevaluation, 𝑛 (%)	63 (8.4)	85 (13.5)	26 (18.6)	<0.001
Time to reevaluation, days	358 ± 368	353 ± 308	309 ± 347	0.804
Hospitalization at reevaluation, 𝑛 (%)	23 (3.1)	46 (7.3)	16 (11.4)	<0.001
Hospital LOS, days	1.2 ± 0.5	1.3 ± 0.8	1.5 ± 1.1	0.436
Repeat testing, 𝑛 (%)	23 (3.1)	49 (7.8)	18 (12.9)	<0.001
Tests per patient, mean	0.03 ± 0.2	0.09 ± 0.3	0.16 ± 0.5	<0.001
Cost per patient, mean	$9 ± 65	$34 ± 134	$50 ± 168	<0.001
All-cause mortality, 𝑛 (%)	3 (0.4)	0 (0)	1 (0.7)	0.193
Stroke, 𝑛 (%)	3 (0.4)	7 (1.1)	3 (2.1)	0.081
MI, 𝑛 (%)	3 (0.4)	11 (1.7)	2 (1.4)	0.047
Late revascularization, 𝑛 (%)	0 (0)	3 (0.5)	2 (1.4)	0.006
Composite MACE, 𝑛 (%)	9 (1.2)	17 (2.7)	8 (5.7)	0.005

LAD: left anterior descending.