Number and duration of the eight most frequent ventilator alarms during the whole study, ordered by frequency. They represent over 99% of all alarm events. Alarm definitions are given in online supplementary table 1
| Number | Number per 24 hours | Total alarm duration (hour) | Total alarm duration per 24-hour recording | Median alarm duration (s) | Minimum alarm duration (s) | Maximum alarm duration | |
| Minute volume <low limit | 7792 | 66.7 | 49.59 | 25.5 min | 14.0 | 1.0 | 35 min |
| Tidal volume <low Limit | 7734 | 66.3 | 30.89 | 16 min | 6.0 | 0.9 | 24 min |
| Volume not constant | 3676 | 31.5 | 35.32 | 18 min | 10.0 | 0.9 | 1.8 hours |
| Respiratory rate >high limit | 2760 | 23.6 | 26.29 | 13.5 min | 21.0 | 1.0 | 23 min |
| Tube obstructed | 2437 | 20.9 | 3.28 | 1.7 min | 3.0 | 0.9 | 216 s |
| Minute volume >high limit | 2376 | 20.4 | 22.63 | 11.6 min | 10.0 | 1.0 | 4.33 hours |
| Disconnection ventilator | 476 | 4.1 | 3.24 | 100 s | 6.0 | 1.0 | 22.5 min |
| Check neonatal flow sensor | 195 | 1.7 | 81.35 | 34 min | 70.0 | 2.0 | 13.47 hours |