| 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 |
[35] Diazepam IV (status epilepticus): Prasad M, Krishnan PR, Sequeira R, Al-Roomi K. Anticonvulsant therapy for 2014 Sep 10;(9):CD003723. https://www.ncbi.nlm.nih.gov/pubmed/25207925
Diazepam, IV (status epilepticus): NICE. Epilepsies: diagnosis and management: Clinical guideline [CG137], published January 2012 and updated February 2016. https://www.nice.org.uk/guidance/cg137