Evidence-based Urology:Understanding Heterogeneity in Systematic Reviews

Variability in the results of randomized trials presents challenges to the interpretation and application of the evidence to patient care. Understanding how systematic reviews deal with this problem of "heterogeneity" will help clinicians in applying results in their patient management. This manuscript offers a review of heterogeneity from the clinical urological perspective.  PATIENT SUMMARY: Systematic reviews of the literature are necessary to accurately summarize the available evidence to inform clinical decisions. In this mini-review, we explain how to understand and deal with the differences between studies-which we call heterogeneity-included in these types of reviews

How To Read a Network Meta-analysis

Network meta-analysis (NMA) expands upon traditional meta-analysis by integrating three or more interventions. This allows comparing interventions using evidence from trials that have compared pairs of interventions directly, and indirect evidence through common comparators. We provide an overview of NMA concepts and considerations when interpreting results from a systematic review with a NMA and applying them to clinical practice. Patient summary: Network meta-analysis is a statistical tool that allows researchers to compare multiple treatments for a medical condition at once, even when treatments have not been compared to each other in research studies. This mini-review explains how to read a network meta-analysis and apply its results in patient care.Peer reviewe

Scaling up quality-assured psychotherapy : The role of therapist competence on perinatal depression and anxiety outcomes

Objectives: To examine: (1) the psychometric properties of two therapist competence measures-multiple choice questionnaire (MCQ) and standardized role-plays; (2) whether therapist competence differed between non-specialist (NSPs) and specialist (SPs) providers; and (3) the relations between therapist competence and pa-tient outcomes among perinatal patients receiving brief psychotherapy.Methods: This study is embedded within the SUMMIT Trial-a large, ongoing psychotherapy trial for perinatal women with depressive and anxiety symptoms. We assessed the: (1) psychometric properties of therapist competence measures using Cronbach's alpha and inter-class correlation; (2) differences in therapist competence scores between n = 23 NSPs and n = 22 SPs using a two-sample t-test; and (3) relations between therapist competence measures and perinatal patient outcomes through a linear regression model.Results: Internal consistency for role-play was acceptable (alpha = 0.71), whereas MCQ was excellent (alpha = 0.97). Role-play showed good inter-rater reliability (ICC = 0.80) and scores were higher for SPs compared with NSPs (t (2,38) =-2.86, p = 0.0069) and associated with outcomes of anxiety (B = 1.52, SE = 0.60, p = 0.01) and depressive (B = 0.96, SE = 0.55, p = 0.08) symptom scores.Conclusions: Our study highlights the importance of demonstrating psychological treatment skills through standardized role-plays over knowledge-based competence to predict perinatal patient outcomes. Using well-defined evidence-based tools is critical for deploying NSPs to provide high-quality psychotherapy and increase accessibility to psychological treatments for perinatal populations worldwide.Peer reviewe