Likelihood of admission by shock index, stratified by age
| SI | 18–44 years Positive LR (95% CI) | 45–64 years Positive LR (95% CI) | ≥65 years Positive LR (95% CI) |
| SI<0.4 | 1.67 (1.67 to 1.68) | 1.03 (1.02 to 1.02) | 0.77 (0.77 to 0.77) |
| SI<0.5 | 1.03 (1.03 to 1.03) | 0.90 (0.90 to 0.90) | 0.76 (0.75 to 0.76) |
| 0.5≤SI≤0.7 | 1.24 (1.24 to 1.24) | 1.25 (1.25 to 1.25) | 1.11 (1.11 to 1.11) |
| SI>0.7 | 1.23 (1.22 to 1.23) | 1.47 (1.46 to 1.46) | 1.71 (1.71 to 1.71) |
| SI>0.8 | 1.50 (1.50 to 1.50) | 2.02 (2.01 to 2.02) | 2.21 (2.21 to 2.21) |
| SI>0.9 | 1.93 (1.92 to 1.93) | 2.67 (2.67 to 2.67) | 2.63 (2.62 to 2.63) |
| SI>1.0 | 2.89 (2.89 to 2.90) | 3.64 (3.62 to 3.64) | 3.02 (3.01 to 3.02) |
| SI>1.1 | 3.96 (3.94 to 3.96) | 5.11 (5.09 to 5.12) | 3.12 (3.11 to 3.13) |
| SI>1.2 | 5.49 (5.47 to 5.50) | 7.34 (7.31 to 7.36) | 3.63 (3.61 to 3.63) |
| SI>1.3 | 6.79 (6.77 to 6.82) | 8.07 (8.02 to 8.10) | 4.60 (4.58 to 4.62) |
| SI>1.4 | 6.31 (6.27 to 6.34) | 8.13 (8.08 to 8.18) | 4.89 (4.86 to 4.92) |
LR, likelihood ratio; SI, shock index.