| 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 |
[3] Suxamethonium dose: Luten, RC, Kissoon, N. Approach to the pediatric airway. In: Manual of emergency airway management, Walls, RM, Murphy, MF, Luten, RC, et al (Eds), Lippincott Williams and Wilkins, Philadelphia 2004. p.212. AND McAllister JD, Gnauck KA. Rapid sequence intubation of the pediatric patient. Fundamentals of practice. Pediatr Clin North Am 1999; 46:1249.