| 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 |
[6] SSRIs, oral (anxiety): SSRIs (Therapeutic class): National Department of Health: Affordable Medicines, EDP- PHC and Adult Hospital level. Medicine Review: SSRIs, therapeutic class for anxiety and depression, October 2017. http://www.health.gov.za/
SSRIs, oral (anxiety): Bandelow B, Reitt M, Rover C, Michaelis S, Gorlich Y, Wedekind D. Efficacy of treatments for anxiety disorders: a meta-analysis. Int Clin Psychopharmacol. 2015;30(4):183-92. https://www.ncbi.nlm.nih.gov/pubmed/25932596
SSRIs, oral (anxiety): Mayo-Wilson E, Dias S, Mavranezouli I, Kew K, Clark DM, Ades AE, et al. Psychological and pharmacological interventions for social anxiety disorder in adults: a systematic review and network meta-analysis. Lancet Psychiatry. 2014;1(5):368-76. https://www.ncbi.nlm.nih.gov/pubmed/26361000
SSRIs, oral (anxiety): Stahl SM, Gergel I, Li D. Escitalopram in the treatment of panic disorder: a randomized, double-blind, placebo-controlled trial. J Clin Psychiatry. 2003 Nov;64(11):1322-7. https://www.ncbi.nlm.nih.gov/pubmed/14658946
SSRIs, oral (anxiety): Thorlund K, Druyts E, Wu P, Balijepalli C, Keohane D, Mills E. Comparative efficacy and safety of selective serotonin reuptake inhibitors and serotonin-norepinephrine reuptake inhibitors in older adults: a network meta-analysis. J Am Geriatr Soc. 2015;63(5):1002-9. https://www.ncbi.nlm.nih.gov/pubmed/25945410