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. 2023 Jan 3;61(3):709–720. doi: 10.1007/s11517-022-02751-5

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