Table 6.
Regression analysis on blood loss for single-layer clothing
| CAT | |||
|---|---|---|---|
| explanatory variables | coefficients | standard error | p |
| bloodloss (constant) | 87.16 | ||
| applied pressure | -0.06 | 0.03 | 0.046 |
| time | 2.38 | 0.70 | 0.001 |
| thickness | 5.58 | 7.38 | 0.452 |
| weight | 0.14 | 0.21 | 0.512 |
| deformation | -378.83 | 183.26 | 0.042 |
| R2 | 0.48 | ||
| R2adjusted | 0.44 | ||
| F (df = 5; 74) | 13.47 | ||
| SAMXT | |||
| explanatory variables | coefficients | standard error | p |
| bloodloss (constant) | 66.86 | ||
| applied pressure | -0.21 | 0.05 | < 0.001 |
| time | 2.99 | 0.43 | < 0.001 |
| thickness | -40.86 | 12.12 | 0.001 |
| weight | 0.79 | 0.33 | < 0.001 |
| deformation | 1148.27 | 308.34 | 0.02 |
| R2 | 0.57 | ||
| R2adjusted | 0.54 | ||
| F (df = 5; 74) | 19.571 | ||
| SOFTT-W | |||
| explanatory variables | coefficients | standard error | p |
| bloodloss (constant) | 126.21 | ||
| applied pressure | -0.22 | 0.05 | < 0.001 |
| time | 2.74 | 0.48 | < 0.001 |
| thickness | 7.74 | 11.81 | 0.51 |
| weight | − 0.09 | 0.33 | 0.78 |
| deformation | − 298.64 | 294.27 | 0.31 |
| R2 | 0.50 | ||
| R2adjusted | 0.47 | ||
| F (df = 5; 74) | 15.01 | ||
Regression analysis of the effect of application time, applied pressure, and textile characteristics (total thickness, mean mass per unit area, and mean deformation) on blood loss for single-layer clothing
CAT: Combat Application Tourniquet® Generation 7; SAMXT: SAM® Extremity Tourniquet; SOFTT-W: SOF® Tactical Tourniquet Wide Generation 4