Table 1.
Summary of patient characteristics
| Characteristics | Conventional assessment group (%) | SAW group (%) | |
|---|---|---|---|
| Number of patients | 120,822 | 150,343 | |
| Gender | Male | 66,753 (55.25) | 83,937 (55.83) |
| Female | 54,069 (44.75) | 66,406 (44.17) | |
| Age (years) | Age range (years) | 0–104 | 0–102 |
| Mean age (years) | 58 ± 15 | 58 ± 14 | |
| 0–29 | 5013 (4.15) | 5592 (3.72) | |
| 30–69 | 89,741(74.28) | 111,922 (74.44) | |
| ≥ 70 | 26,068 (21.58) | 32,829 (21.84) | |
| Examination region | Coronary CTA | 23,718 (17.71) | 26,869 (16.62) |
| Head and neck CTA/CTP | 40,836 (30.49) | 40,741 (25.20) | |
| Other regions | 69,392 (51.81) | 94,039 (58.18) | |
| Type of ICM | LOCM | 102,208 (84.59) | 132,906 (88.40) |
| IOCM | 18,614 (15.41) | 17,437 (11.60) | |
| Injection dose | < 100 mL | 104,971 (86.88) | 138,702 (92.26) |
| ≥ 100 mL | 12,264 (10.15) | 11,596 (7.71) | |
| Unknown | 3587 (2.97) | 45 (0.03) | |
| Injection speed | < 5 mL/s | 70,835 (58.63) | 97,967 (65.16) |
| ≥ 5 mL/s | 42,878 (35.49) | 52,332 (34.81) | |
| Unknown | 7109 (5.88) | 44 (0.03) |
ICM, iodinated contrast media; SAW, stratified assessment and warning; CTA, CT angiography; CTP, CT perfusion; LOCM, low-osmolality contrast media; IOCM, iso-osmolality contrast media
More than one examination region might be involved in one CECT examination