Table 3

The total number of all alarms and the number occurring every 8 h

Alarms (/overall period: 2697 patient-monitored hours)nPer cent of total
Total numbers11 591
 Technical annotation
  Technically true822471.0
  Technically false247921.4
  Indeterminable8887.7
 Clinical annotation
  Relevant alarm7406.4
  Helpful, but not relevant, alarm380032.8
  Irrelevant alarm704960.8
  Indeterminable20.02
Alarms (count/8 h)Mean±SDMedian (ranges)
Total numbers31.8±28.623.5 (1–200)
 Relevant alarm2.0±7.70 (0–60)
 Helpful, but not relevant, alarm10.4±13.36 (0–178)
 Irrelevant alarm19.4±20.913.5 (0–96)
 Indeterminable0.005±0.10 (0–2)