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

Table 6

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

	No RCA CAD; 𝑛 = 990	Nonobstructive RCA; 𝑛 = 454	Obstructive RCA; 𝑛 = 73	𝑃 value
Age	51.2 ± 14.1	56.6 ± 13.3	59.6 ± 14.0	<0.001
Male gender	599 (60.5)	268 (59)	51 (69.9)	0.213
Chest pain reevaluation, 𝑛 (%)	97 (9.8)	68 (15)	9 (12.3)	0.016
Time to reevaluation, days	371 ± 349	326 ± 327	277 ± 215	0.567
Hospitalization at reevaluation, 𝑛 (%)	43 (4.3)	36 (7.9)	6 (8.2)	0.014
Hospital LOS, days	1.2 ± 0.7	1.3 ± 0.6	2.2 ± 1.5	0.018
Repeat testing, 𝑛 (%)	41 (4.1)	43 (9.5)	6 (8.2)	<0.001
Tests per patient, mean	0.05 ± 0.3	0.11 ± 0.4	0.08 ± 0.3	0.001
Cost per patient, mean	$14 ± 88	$40 ± 146	$34 ± 125	<0.001
All-cause mortality, 𝑛 (%)	3 (0.3)	0 (0)	1 (1.4)	0.098
Stroke, 𝑛 (%)	4 (0.4)	4 (0.9)	5 (6.8)	<0.001
MI, 𝑛 (%)	4 (0.4)	9 (2.0)	3 (4.1)	0.001
Late revascularization, 𝑛 (%)	0 (0)	3 (0.7)	2 (2.7)	<0.001
Composite MACE, 𝑛 (%)	0 (0)	1 (0.2)	1 (1.4)	<0.001

RCA: right coronary artery.