Table 2.
Scores used to calculate the performance score (P-score)
| Score | Sensitivity for early detection (Searly (%)) | Total alarm rate (TAR (alarms/patient/day)) |
|---|---|---|
| −3 | Searly ≤ Searly:ref–10 | TAR > TARref + 0.5 |
| −2 | Searly−10 < Searly ≤ Searly:ref−5 | TARref + 0.25 < TAR ≤ TARref + 0.5 |
| −1 | Searly:ref−5 < Searly ≤ Searly:ref | TARref < TAR ≤ TARref + 0.25 |
| 0 | Searly = Searly:ref | TAR = TARref |
| 1 | Searly:ref < Searly ≤ Searly:ref + 5 | TARref–0.25 < TAR ≤ TARref |
| 2 | Searly:ref + 5 < Searly ≤ Searly:ref + 10 | TARref–0.5 < TAR ≤ TARref – 0.25 |
| 3 | Searly > Searly:ref + 10 | TAR ≤ TARref–0.5 |
Searly: sensitivity for early detection of adverse events, Searly:ref: sensitivity of original alarm strategy for early detection of adverse events (reference). TAR: total alarm rate, TARref: total alarm rate of original alarm strategy (reference). The performance score (P-score) is calculated as the sum of the two scores that correspond to the Searly and total alarm rate, respectively