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Estimated PONV incidence as a function of baseline risk, assuming each intervention reduces relative risk 26%. Values are presented as percentages.
| Number of interventions | ||||
|---|---|---|---|---|
| None* | One | Two | Three | Four |
| 10 | 7 | 5 | 4 | 3 |
| 20 | 15 | 11 | 8 | 6 |
| 40 | 29 | 22 | 16 | 12 |
| 60 | 44 | 33 | 24 | 18 |
| 80 | 59 | 44 | 32 | 24 |
The exemplified baseline risk levels of 10%, 20%, 40%, 60% and 80% reflect 0, 1, 2, 3, and 4 risk factors considered in a simplified risk score.17
