IABP-SHOCK II risk score
| Score | Total (N=116) | IABP (N=54) | Impella (N=62) | P value |
| Low (0–2) | 40 (36) | 17 (34) | 23 (38) | 0.68 |
| Intermediate (3–4) | 50 (45) | 23 (46) | 27 (44) | 0.85 |
| High (5–9) | 21 (19) | 10 (20) | 11 (18) | 0.79 |
Data depicted as counts (%). P values are from the Fischer test. Data on the IABP-SHOCK II risk score was notretrievable for five patients.
IABP-SHOCK II, Intra-aortic Balloon Pump in Cardiogenic Shock II.