Dual diagnosis among medical residents: a systematic review.

The post-graduate period as a resident doctor (MIR, in Spanish) is usually associated with high emotional distress due to new professional demands and to other psychosocial factors. The objective of this study is to determine the characteristics of dual diagnosis among MIRs. A systematic review was carried out in MEDLINE (PubMed), Web of Science and Google Scholar databases, selecting articles published in English and Spanish between 1984 and 2017. A total of 2,415 articles were obtained: 2,276 were excluded by their title, 105 by the abstract and 17 after a complete review of the article; 17 papers were finally included. The prevalence of depressive symptoms among MIRs ranges from 10.2% to 70%, while the prevalence of anxious symptoms varies from 13.2% to 33.9%, from 6.7% to 25% reported suicidal ideation, 20% hazardous drinking, 2%-13.4% self-prescribed psychotropics, and 2.7%-14% used other drugs. Most studies present important methodological limitations, thus complicating adequate understanding of the phenomenon. High variations in prevalence data are related to differences in the psychometric scales and to disparity in diagnosis criteria, among other limitations. However, most studies report that alcohol and drug use is correlated with severe distress among MIRs. More research is needed to ascertain the nature of dual diagnosis in this professional group in order to effectively prevent and treat its serious consequences.