Table 3

Logistic regression modeling the need for SAE or failing non-operative management, vs. successful observation

CovariateOverall (AUROC: 0.87)Grades I and II (AUROC: 0.90)Grade III (AUROC: 0.84)Grade IV (AUROC: 0.71)Grade V (AUROC: 0.90)
OR (95% CI)P valueOR (95% CI)P valueOR (95% CI)P valueOR (95% CI)P valueOR (95% CI)P value
Moderate/large HP vs. small3.0 (1.3 to 6.7)0.0013.0 (0.7 to 11.9)0.013.9 (0.9 to 16.1)0.04NA19.0 (0.3 to >999)0.27
Blush vs. not1.5 (0.7 to 3.2)0.295.9 (1.3 to 26.7)0.02NANANA
HR ≥120 vs. HR <1201.2 (0.5 to 2.9)0.713.2 (0.6 to 15.8)0.160.2 (0.02 to 1.3)0.0810.6 (0.4 to 262)0.15NA
Male sex vs. female1.3 (0.7 to 2.5)0.416.3 (1.0 to 38.5)0.047NANANA
Vehicular vs. fall cause1.3 (0.6 to 3.0)0.270.4 (0.1 to 1.8)0.486.1 (1.3 to 27.3)0.02NANA
Vascular injury vs. not10.8 (2.2 to 53.7)0.004NA4.8 (0.6 to 40.0)0.151.5 (0.2 to 9.4)0.67NA
ISS (10-unit increase)1.2 (0.9 to 1.6)0.28NANA1.4 (0.7 to 2.9)0.3NA
GCS score 3–8 vs. 9–15NA3.1 (0.9 to 10.8)0.08NANANA
Blood type O vs. otherNANA1.9 (0.7 to 5.2)0.19NANA
Abnormal RR vs. RR 12–20NANA1.5 (0.5 to 4.6)0.48NANA
Age (10-unit increase)NANA1.4 (1.1 to 1.8)0.02NANA
BSI grade (continuous)2.7 (1.9 to 3.8)<0.001NANANA
  • *Variables marginally associated in the univariate analysis (p<0.20) were included in the final multivariate logistic regression model. NA indicates that the covariate was not examined in the specific model. Bolding denotes significance <0.05.

  • AUROC, area under the receiver operating characteristic curve; BSI, blunt splenic injury;GCS, Glasgow Coma Scale;HP, hemoperitoneum;HR, heart rate;ISS, Injury Severity Score;RR, respiratory rate; SAE, splenic artery embolization.