Agent tested | Data range | Percentage difference in survival (%) | χ2 test |
Haemostatic agent used vs no haemostatic agent used | All cases | 7 | χ²(1, N=2156)=10.86, p<0.00 |
NISS 15–35 | 5 | χ²(1, N=254)=1.17, p=0.69 | |
NISS 36–55 | 13 | χ²(1, N=707)=5.41, p=0.20 | |
NISS 56–75 | 11 | χ²(1, N=1195)=6.17, p=0.01 | |
Celox used vs no haemostatic agent used | All cases | 14 | χ²(1, N=2156)=26.53, p<0.00 |
NISS 15–35 | 6 | χ²(1, N=254)=1.17, p=0.28 | |
NISS 36–55 | 14 | χ²(1, N=707)=4.52, p=0.03 | |
NISS 56–75 | 24 | χ²(1, N=1195)=17.96 p<0.00 | |
Quickclot used vs no haemostatic agent used | All cases | -6 | χ²(1, N=2156)=0.24, p=0.63 |
NISS 15–35 | 4 | p=0.33* | |
NISS 36–55 | 9 | p=1.00* | |
NISS 56–75 | −8 | p=1.00* | |
Hemcon used vs no haemostatic agent used | All cases | −8 | χ²(1, N=2156)=2.27, p=0.13 |
NISS 15–35 | −11 | χ²(1, N=254)=0.64, p=0.42 | |
NISS 36–55 | 27 | χ²(1, N=707)=0.35, p=0.56 | |
NISS 56–75 | 1 | χ²(1, N=1195)=1.63 p=0.13 |
*Fisher’s exact two-sided used as minimum case threshold for χ2 not met.
NISS, New Injury Severity Score.