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Integrated care approaches have been recommended for co-occurring substance use and mental health disorders. The purpose of this study is to explore and map the research literature regarding social work and its intersection with co-occurring substance use and mental health disorders.

An iterative and systematic search of five electronic databases CINAHL, Scopus, PsycINFO, Social Science Database and Medline was conducted to identify studies published between 2002 and 2022. Two reviewers independently screened publications in two successive stages of title and abstract screening, followed by a full-text screening of eligible studies. Data from each included publication were screened and extracted using Covidence.

A total of 38 eligible studies were included in the final scoping review. The included studies were conducted in eight different counties, including a range of study designs (e.g. cross-sectional, RCT, pilot studies). Only 8 of the 38 studies included people with co-occurring disorders as participants. Study settings were broad, for example, dual-diagnosis, military, homeless, substance use and community-based settings.

A review of the literature surrounding social work practice and its intersection with co-occurring mental health and Alcohol and other drug was warranted to document the evidence on this largely unexplored area of research. This review found that there was a paucity of literature that focused specifically on the role of social work practice in relation to individuals with co-occurring disorders, with a limited number of studies focusing on dual diagnoses.

The authors provide a general framework of behavior under asymmetric information and develop indices of diligence, objectivity and quality by an analyst and analyst firm about a studied firm, and relate them to the accuracy of its forecasts. The authors test the associations of these indices with time.

The test of Public Information versus Non-Public Information Models provides the index of diligence, which equals one minus the p-value of the Hausman Specification Test of Ordinary Least Squares (OLS) versus Two Stage Least Squares (2SLS). The test of Objectivity versus Non-Objectivity Models provides the index of objectivity, which equals the p-value of the Wald Test of zero coefficients versus non-zero coefficients in 2SLS regression of the earnings forecast residual. The exponent of the negative of the standard deviation of the residuals of the analyst forecast regression equation provides the index of analytical quality. Each index asymptotically equals the Bayesian ex post probability, by the analyst and analyst firm about the studied firm, of the relevant behavior.

The authors find that ex post accuracy is a statistically and economically significant increasing function of the product of the indices of diligence, objectivity and quality by the analyst and analyst firm about the studied firm, which asymptotically equals the Bayesian ex post joint probability of diligence, objectivity and quality. The authors find that diligence, objectivity, quality and accuracy did not improve with time.

There has been no previous work done on the systematic and objective characterization and joint analysis of diligence, objectivity and quality of analyst forecasts by an analyst and analyst firm for a studied firm, and their relation with accuracy. This paper puts together the frontiers of various disciplines.