Table 3.
The AAR incidence in patients with different ICM injection parameters
Conventional assessment group (%) | SAW group (%) | P value | RD (95% CI) | ||
---|---|---|---|---|---|
Types of ICM | IOCM | 0.69 (129/18,614) | 0.47 (82/17,437) | 0.01 | 0.22 (0.07, 0.38) |
LOCM | 0.37 (377/102,208) | 0.25 (332/132,906) | < 0.001 | 0.12 (0.07, 0.17) | |
P value | < 0.001 | < 0.001 | |||
IOCM | Mild AAR | 0.63 (117/18,614) | 0.46 (80/17,437) | 0.03 | 0.17 (0.02, 0.32) |
Moderate AAR | 0.06 (11/18,614) | 0.005 (1/17,437) | 0.01 | 0.05 (0.02, 0.10) | |
Severe AAR | 0.005 (1/18,614) | 0.005 (1/17,437) | 1.00 | 0 (− 0.03, 0.03) | |
LOCM | Mild AAR | 0.34 (343/102,208) | 0.24 (319/132,906) | < 0.001 | 0.10 (0.05, 0.14) |
Moderate AAR | 0.03 (28/102,208) | 0.008 (10/132,906) | < 0.001 | 0.02 (0.01, 0.03) | |
Severe AAR | 0.006 (6/102,208) | 0.002 (3/132,906) | 0.29 | 0.004 (0, 0.01) | |
Injection dose | < 100 mL | 0.39 (413/104,971) | 0.28 (385/138,702) | < 0.001 | 0.12 (0.07, 0.16) |
≥ 100 mL | 0.60 (73/12,264) | 0.25 (29/11,596) | < 0.001 | 0.35 (0.18, 0.52) | |
P value | 0.01 | 0.59 | |||
Injection speed | < 5 mL/s | 0.34 (238/70,835) | 0.27 (262/97,967) | 0.01 | 0.07 (0.02, 0.12) |
≥ 5 mL/s | 0.57 (245/42,878) | 0.29 (152/52,332) | < 0.001 | 0.28 (0.20, 0.37) | |
P value | < 0.001 | 0.42 |
ICM, iodinated contrast media; AAR, acute adverse reactions; SAW, stratified assessment and warning; RD, rate difference; CI, confidence interval; LOCM, low-osmolality contrast media; IOCM, iso-osmolality contrast media