Dose of midazolam versus age and number of of synchronised shocks
| Number of patients | Mean (SD) dose of midazolam (mg) | |
| Age (years) | ||
| < 60 | 36 (21%) | 10.4 (1.4) |
| 60–74 | 80 (48%) | 8.7 (1.8) |
| > 75 | 53 (31%) | 7.3 (2.0) |
| Number of shocks | ||
| One | 106 (63%) | 8.3 (2.1) |
| Two | 35 (21%) | 8.5 (1.9) |
| Three | 28 (16%) | 9.9 (1.7) |