Table 1.
Patient demographics and clinical characteristics
| Characteristics | Number of patients (%) | ADR (%) |
|---|---|---|
| Total | 120,822 | 506 (0.42) |
| Mean age (years) | 57.6 ± 14.6 | 52.3 ± 13.7 |
| Age range (years) | 0–104 | 4–90 |
| Gender | ||
| Male | 66,753 (55.25) | 256 (0.38) |
| Female | 54,069 (44.75) | 250 (0.46) |
| Examination regions | ||
| Coronary CTA | 23,718 (16.20) | 120 (0.51) |
| Head and neck CTA/CTP | 33,707 (23.00) | 140 (0.42) |
| The body and other regions | 88,970 (60.82) | 246 (0.28) |
| Age groups (years) | ||
| 0–9 | 485 (0.40) | 2 (0.41) |
| 10–19 | 1146 (0.95) | 4 (0.35) |
| 20–29 | 3382 (2.80) | 25 (0.74) |
| 30–39 | 6874 (5.69) | 41 (0.60) |
| 40–49 | 21,751 (18) | 140 (0.64) |
| 50–59 | 27,853 (23.05) | 140 (0.50) |
| 60–69 | 33,263 (27.53) | 103 (0.31) |
| 70–79 | 19,681 (16.29) | 41 (0.21) |
| ≥80 | 6387 (5.29) | 10 (0.16) |
| BMI | ||
| <18.5 | 11,801 (9.77) | 44 (0.37) |
| 18.5–23.9 | 61,050 (50.53) | 236 (0.39) |
| ≥24 | 47,381 (39.22) | 225 (0.47) |
| Unknown | 590 (0.49) | 1 (0.17) |
| Injection dose (ml) | ||
| ≤60 | 51,321 (42.48) | 216 (0.42) |
| 61–99 | 53,650 (44.40) | 197 (0.37) |
| ≥100 | 12,264 (10.15) | 73 (0.60) |
| Unknown | 3587 (2.97) | 20 (0.56) |
| Injection speed (ml s−1) | ||
| <4 | 28,469 (23.56) | 85 (0.30) |
| 4–4.9 | 42,366 (35.06) | 153 (0.36) |
| ≥5 | 42,878 (35.49) | 245 (0.57) |
| Unknown | 7109 (5.88) | 23 (0.32) |
| Types of NICMs | ||
| Iso-osmolar | 18,614 (15.41) | 129 (0.69) |
| Hypo-osmolar | 102208 (84.59) | 377 (0.37) |
ADR, adverse drug reaction; BMI, body mass index; CTA, CT angiography; CTP, CT perfusion imaging; NICM, non-ionic iodinated contrast medium.