| Level I | Good quality evidence |
Systematic review of RCTs with consistent findings High quality individual RCT |
| Level II |
Limited quality patient orientated evidence |
Systematic review of lower quality studies or studies with inconsistent findings Low quality clinical trial Cohort studies Case-control studies |
| Level III | Other |
Consensus guidelines, extrapolations from bench research, usual practice, opinion, disease-oriented evidence (intermediate or physiologic outcomes only), or case series |
[21] Midazolam, IV/SC (delirium): NHS Scotland. Scottish Palliative Care Guidelines – Delirium, 15 April 2014. [Internet] [Accessed 23 November 2017] Available at: http://www.palliativecareguidelines.scot.nhs.uk/guidelines/symptom-control/Delirium.aspx
Midazolam, IV/SC (delirium): Bush SH, Tierney S, Lawlor PG. Clinical Assessment and Management of Delirium in the Palliative Care Setting. Drugs. 2017 Oct;77(15):1623-1643. https://www.ncbi.nlm.nih.gov/pubmed/28864877