Summary The response to antipsychotic treatment in schizophrenia appears to vary, and as such it has been proposed that different subtypes of schizophrenia exist, defined by treatment-response. This has not been formally examined using meta-analysis. Randomised controlled trials comparing placebo and antipsychotics in acute treatment of schizophrenia listed in PubMed, EMBASE and PsycINFO from inception until November 30, 2018 were examined. Relative variability of symptomatic improvement in antipsychotic-treated individuals compared to placebo-treated individuals was quantified using coefficient of variation ratio (CVR). Mean difference in symptom change was quantified using Hedges’ g. In addition, individual patient data from two clinical trials was examined in terms of both the distribution of total symptom change, and the variability of individual symptoms and symptom factors. 11,006 articles were identified. 66 met inclusion criteria, reporting on 17,202 patients. Compared with placebo, antipsychotic-treated patients demonstrated greater total symptom improvement (g=0.47, p<0.001) and reduced variability in symptomatic improvement for total (CVR=0.86, p<0.001), positive (CVR=0.89, p<0.001), and negative symptoms (CVR=0.86, p=0.001). Lower variability in antipsychotic-response was associated with studies published earlier (z=3.98, p<0.001), younger patients (z=3.07, p=0.002), higher dose treatments (z=-2.62, p=0.009), and greater mean-difference in symptom-change (z=-5.70, p<0.001). In the individual patient dataset (N=522 patients), antipsychotic treated patients did not show significantly increased variability for any individual symptom, and there was no evidence of a bimodal distribution of response. Compared to placebo, antipsychotic treatment shows greater improvement and lower variability of change in total, positive and negative symptoms. This is contrary to the hypothesis that there is a subtype of antipsychotic non-responsive schizophrenia. Instead our findings, provide evidence for a relatively homogeneous effect of antipsychotic treatment in improving symptoms of schizophrenia.
Medical recruitment and retention are national problems. Psychiatry has been more affected than many specialties, as a result of stigma from the public and other healthcare professionals. The Royal College of Psychiatrists has undertaken several initiatives to redress this, notably the ‘Choose Psychiatry’ campaign. In this editorial we argue that student-led university psychiatry societies are a wonderful but frequently untapped resource to help attract the brightest and best medical students to our profession. We describe the activities of three ‘Psych Socs’ across the UK and propose next steps to continue this work.
Infographics are graphic visual representations of educational content, used to deliver complex information, disseminate scientific research, and drive behavioral change. Herein, we review some of the factors pertinent to designing infographics and the potential for automation in the future. To guide high-impact design, it is vital to clearly define the objectives of the infographic and its target audience. Designing an effective infographic necessitates careful consideration of the layout, colors, font, and context. More recently, technical support to develop infographics are increasingly available through online software (Canva, Adobe, and Venngage) and emerging artificial intelligence programs. References can also become a visual representation of trends in scientific discovery. It is crucial for clinicians, researchers and scientists to have the knowledge and skills to design compelling infographics. In the era of social media, the uptake and effects of infographics for disseminating scientific research and public health education need to be further studied to understand their full potential.
Background Antipsychotics are more effective than placebo in reducing symptoms in schizophrenia. However, response to treatment appears to vary, and as such it has been proposed that different subtypes of schizophrenia exist, defined by treatment-response. This has not been formally examined using meta-analysis. Methods Randomised controlled trials comparing placebo and antipsychotics for the acute treatment of schizophrenia published between January 1 1950 and November 30, 2018 were examined. Mean change and variance of change in symptoms were extracted from each study, alongside publication year, participant age and gender, baseline symptom severity, antipsychotic dose, and use of placebo lead-in. Relative variability of symptomatic improvement in antipsychotic-treated individuals compared to placebo-treated individuals was quantified using coefficient of variation ratio (CVR). Mean difference in symptom change was quantified using Hedges’ g. The significance of potential moderating factors was assessed using meta-regression and sensitivity analyses. In addition, individual patient data from two clinical trials (N=522) was examined in terms of both the distribution of total symptom change, and the variability of individual symptoms and symptom factors. Results 11,006 articles were identified. 66 met inclusion criteria, reporting on 17,202 participants. Compared with placebo, antipsychotic-treated patients demonstrated both greater symptomatic improvement (g=0.47, p<0.001) and reduced variability in symptomatic improvement (CVR=0.86, p<0.001). Lower variability in antipsychotic-response was associated with studies including younger patients (z=3.07, p=0.002), those published earlier (z=3.98, p<0.001), with higher dose treatments (z=-2.62, p=0.009), and greater mean-difference in symptom-change (z=-5.70, p<0.001). In the individual patient data antipsychotic treated patients did not show significantly increased variability for any individual symptom, and there was no evidence of a bimodal distribution of response. Discussion Compared to placebo, in addition to a greater mean change, antipsychotic treatment shows lower variability of change in total, positive, and negative symptoms. This is contrary to the hypothesis that there exists a subtype of antipsychotic non-responsive schizophrenia, instead providing evidence for a relatively homogeneous effect of antipsychotic treatment in improving symptoms of schizophrenia.
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