| 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 |
[10] Potassium chloride, oral: South African Medicines Formulary. 12th Edition. Division of Clinical Pharmacology. University of Cape Town, 2016.
Potassium chloride, oral: Rastegar A, Soleimani M. Hypokalaemia and hyperkalaemia. Postgrad Med J. 2001 Dec;77(914):759-64. Review. Erratum in: Postgrad Med J 2002 Feb;78(916):126. Rastergar A [corrected to Rastegar A]. http://www.ncbi.nlm.nih.gov/pubmed/8250319
Potassium chloride, oral: Wong KC, Schafer PG, Schultz JR. Hypokalemia and anesthetic implications. AnesthAnalg. 1993 Dec;77(6):1238-60. Review. Erratum in: AnesthAnalg 1994 May;78(5):1035. http://www.ncbi.nlm.nih.gov/pubmed/8250319