| 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 |
[30] Antipsychotics, oral (risk in pregnancy/breastfeeding): Uguz F. Antipsychotic Use During Pregnancy and the Risk of Gestational Diabetes Mellitus: A Systematic Review. J Clin Psychopharmacol. 2019 Mar/Apr;39(2):162-167. https://www.ncbi.nlm.nih.gov/pubmed/30624301
Antipsychotics, oral (risk in pregnancy/breastfeeding): Damkier P, Videbech P. The Safety of Second-Generation Antipsychotics During Pregnancy: A Clinically Focused Review. CNS Drugs. 2018 Apr;32(4):351-366. https://www.ncbi.nlm.nih.gov/pubmed/29637530