Clinical application of 'Sophia Observation withdrawal Symptoms-Paediatric Delirium' screening tool in Danish version: A feasibility study.

The study included 50 children and was not designed to give firm statistical conclusions; it was a feasibility study rather than a validation study. The children were selected by availability from five units, and only a few were on mechanical ventilation because deeply sedated children were excluded. The nurses did not use the SOS-PD systematically around the clock, so the results mainly reflect prompted day-shift assessments. The nurse screen covered only the past 4 hours, while the psychiatrist assessed the past 24 hours. The cut-off score of 4 was not tested as optimal for the Danish version. The tool is not validated for newborns and infants under 3 months, although some infants were included.

The authors declared no conflicts of interest. Funding was from Novo Nordisk Fonden, Rigshospitalet and Copenhagen University Hospital.

Do not read the 88% agreement as proof that SOS-PD reliably detects paediatric delirium. This was a small feasibility study, not a validation study, and three cases were missed because the nurse screen covered only the previous 4 hours while the psychiatrist looked at the previous 24 hours.