| 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 |
[12] Fresh frozen plasma: Prematta M, Gibbs JG, Pratt EL, Stoughton TR, Craig TJ. Fresh frozen plasma for the treatment of hereditary angioedema. Ann Allergy Asthma Immunol. 2007 Apr;98(4):383-8. http://www.ncbi.nlm.nih.gov/pubmed/17458436
Fresh frozen plasma: Hassen GW, Kalantari H, Parraga M, Chirurgi R, Meletiche C, Chan C, Ciarlo J, Gazi F, Lobaito C, Tadayon S, Yemane S, Velez C. Fresh frozen plasma for progressive and refractory angiotensin-converting enzyme inhibitor-induced angioedema. J Emerg Med. 2013 Apr;44(4):764-72. http://www.ncbi.nlm.nih.gov/pubmed/23114109
Fresh frozen plasma: Culley CM, DiBridge JN, Wilson GL Jr. Off-Label Use of Agents for Management of Serious or Life-threatening Angiotensin Converting Enzyme Inhibitor-Induced Angioedema. Ann Pharmacother. 2016 Jan;50(1):47-59. http://www.ncbi.nlm.nih.gov/pubmed/26416949