Data from the crossover design analysis
| Category | Sequence 1 | Sequence 2 |
| Time to ventilation (primary outcome) | ||
| Period 1 | 217 | 173.5 |
| Period 2 | 196.5 | 217.5 |
| HL estimate | 22 | |
| P value | 0.028 | |
| Time to decision (secondary outcome) | ||
| Period 1 | 134.5 | 120 |
| Period 2 | 130.5 | 159 |
| HL estimate | 9 | |
| P value | 0.273 | |
| Time to start cricothyrotomy (secondary outcome) | ||
| Period 1 | 162.5 | 141.5 |
| Period 2 | 150.5 | 183.5 |
| HL estimate | 14 | |
| P value | 0.076 | |
| Time of performance (time to ventilation–time to start) (secondary outcome) | ||
| Period 1 | 43 | 35.5 |
| Period 2 | 61.5 | 33.5 |
| HL estimate | 4 | |
| P value | 0.213 | |
Further details of the results are displayed in the extended version of table 2 in online supplementary file 4.
The HL estimate for the median time difference (in seconds) between CPR and no-CRP with the 95% CI is provided with the corresponding p value of the Mann-Whitney U test.
The times are displayed as medians in seconds.
Periods 1 and 2 define the periods of the scenarios for each participant: CPR then no-CPR and vice versa.
Sequence 1 is as follows: period 1, CPR; period 2, no-CPR. Sequence 2 is as follows: period 1, no-CPR; period 2, CPR.
CRP, cardiopulmonary resuscitation; HL, Hodges-Lehmann.