Systematic review and meta-analysis suggest that varying prevalence of non-acute pain in critically ill infants may be due to different definitions.
Emre IIhanVerity PaceyLaura BrownKaye SpenceAmit TrivediJulia M HushPublished in: Acta paediatrica (Oslo, Norway : 1992) (2019)
The prevalence of non-acute pain in infants admitted to critical care units varied considerably. This could have been because all the studies used different definitions of non-acute pain.