Table 1 Baseline characteristics of the study population (N = 9625)
From: Prognostic value of CAD-RADS classification by coronary CTA in patients with suspected CAD
|  | All patients (N = 9625) | Survival patients (N = 9085) | Death (N = 540) | P value |
|---|---|---|---|---|
Age (years) | 59.8 (10.7) | 59.2 (10.5) | 69.4 (10.2) | < 0.001 |
Gender (male) | 4262 (44.3) | 3934 (43.3) | 328 (60.7) | < 0.001 |
Traditional CAD classification 1 | < 0.001 | |||
 No CAD | 4425 (46.0) | 4310 (47.4) | 115 (21.3) |  |
 Mild CAD | 3449 (35.8) | 3236 (35.6) | 213 (39.4) |  |
 Moderate CAD | 1008 (10.5) | 920 (10.1) | 88 (16.3) |  |
 Severe CAD | 743 (7.7) | 619 (6.8) | 124 (23.0) |  |
Traditional CAD classification 2 | < 0.001 | |||
 Normal | 4425 (46.0) | 4310 (47.4) | 115 (21.3) |  |
 Mildly abnormal | 4457 (46.3) | 4156 (45.7) | 301 (55.7) |  |
 Moderately abnormal | 198 (2.1) | 168 (1.8) | 30 (5.6) |  |
 Severely abnormal | 545 (5.7) | 451 (5.0) | 94 (17.4) |  |
Traditional CAD classification 3 | < 0.001 | |||
 No CAD | 4425 (46.0) | 4310 (47.4) | 115 (21.3) |  |
 Nonobstructive CAD | 3449 (35.8) | 3236 (35.6) | 213 (39.4) |  |
 1 vessel obstructive CAD | 991 (10.3) | 916 (10.1) | 75 (13.9) |  |
 2 vessel obstructive CAD | 371 (3.9) | 310 (3.4) | 61 (11.3) |  |
 3 vessel/LM obstructive CAD | 389(4.0) | 313(3.4) | 76(14.1) |  |
Duke CAD index |  < 0.001 | |||
 Duke CAD 0 | 4425 (46.0) | 4310 (47.4) | 115 (21.3) |  |
 Duke CAD 1 | 2009 (20.9) | 1918 (21.1) | 91 (16.9) |  |
 Duke CAD 2 | 1440 (15.0) | 1318 (14.5) | 122 (22.6) |  |
 Duke CAD 3 | 750 (7.8) | 698 (7.7) | 52 (9.6) |  |
 Duke CAD 4 | 339 (3.5) | 292 (3.2) | 47 (8.7) |  |
 Duke CAD 5 | 347 (3.6) | 296 (3.3) | 51 (9.4) |  |
 Duke CAD 6 | 133 (1.4) | 112 (1.2) | 21 (3.9) |  |
 Duke CAD 7 | 182 (1.9) | 141 (1.6) | 41 (7.6) |  |
CAD-RADS | < 0.001 | |||
 0 | 4425 (46) | 4310 (47.4) | 115 (21.3) |  |
 1 | 325 (3.4) | 317 (3.5) | 8 (1.5) |  |
 2 | 3124 (32.5) | 2919 (32.1) | 205 (38) |  |
 3 | 1008 (10.5) | 920 (10.1) | 88 (16.3) |  |
 4A | 472 (4.9) | 401 (4.4) | 71 (13.1) |  |
 4B&5 | 271 (2.8) | 218 (2.4) | 53 (9.8) |  |