Effect size analysis

2013 ◽  
Author(s):  
Emanuel Giger ◽  
Harald C. Gall
Keyword(s):  
Effect Size ◽  
Size Analysis

An Effect-Size Analysis of the Relative Efficacy and Tolerability of Serotonin Selective Reuptake Inhibitors for Panic Disorder

2001 ◽  
Vol 158 (12) ◽  
pp. 1989-1992 ◽  
Author(s):  
Michael W. Otto ◽  
Kimberly S. Tuby ◽  
Robert A. Gould ◽  
Renée Y.S. McLean ◽  
Mark H. Pollack
Keyword(s):  
Panic Disorder ◽  
Effect Size ◽  
Size Analysis ◽  
Relative Efficacy

scholarly journals The Other Half of the Story: Effect Size Analysis in Quantitative Research

2013 ◽  
Vol 12 (3) ◽  
pp. 345-351 ◽  
Author(s):  
Jessica Middlemis Maher ◽  
Jonathan C. Markey ◽  
Diane Ebert-May
Keyword(s):  
Educational Research ◽  
Effect Size ◽  
Quantitative Research ◽  
Statistical Significance ◽  
The Other ◽  
Practical Significance ◽  
Significance Testing ◽  
Size Analysis ◽  
Significance Tests ◽  
Statistical Significance Testing

Statistical significance testing is the cornerstone of quantitative research, but studies that fail to report measures of effect size are potentially missing a robust part of the analysis. We provide a rationale for why effect size measures should be included in quantitative discipline-based education research. Examples from both biological and educational research demonstrate the utility of effect size for evaluating practical significance. We also provide details about some effect size indices that are paired with common statistical significance tests used in educational research and offer general suggestions for interpreting effect size measures. Finally, we discuss some inherent limitations of effect size measures and provide further recommendations about reporting confidence intervals.

scholarly journals The Effect of the Arab Spring on the Performance of Islamic and Conventional Banks in Egypt: Which Model Performs Better Amidst Crisis?

2020 ◽  
Vol 11 (4) ◽  
pp. 180
Author(s):  
Zar-Tashiya Khan ◽  
Andres Ramirez ◽  
David Ketcham
Keyword(s):  
Credit Risk ◽  
Effect Size ◽  
Arab Spring ◽  
Small Sample Size ◽  
Small Sample ◽  
Capital Adequacy ◽  
Superior Performance ◽  
Size Analysis ◽  
Ratio Analysis ◽  
The Arab Spring

This empirical study analyzes financial institutions and performance in times of external crisis and whether a difference in performance between Islamic (IBs) and conventional (CBs) bank models exists. Egypt surrounding the Arab Spring (2009-2013) is taken as a case study, comparing 6 CBs and 3 IBs. Financial ratio analysis is the main method employed, allowing performance to be measured by efficiency, capital adequacy, profitability, solvency, liquidity, and credit risk performance. Due to small sample size, the nonparametric Mann-Whitney U test and effect size analysis assess the significance of the ratio analysis results. Results show CBs have superior performance in all indicators other than Cost-Income and NIM. Efficiency performance for both models were equally volatile or alternately stable with progression through the crisis, while IBs increased capital adequacy and solvency during the crisis. IBs profitability was significantly negatively impacted by the crisis, other than related to NIM, while CBs increased profitability rates. IBs liquidity worsened, then improved midway through the crisis while CBs stabilized liquidity rates throughout. IBs improved credit risk midway through the crisis while CBs declined. Nonparametric results hold observed differences are insignificant and have weak effect size for all but the TENL ratio.

Indirect Comparison of Clobazam and Adjunctive Therapies for Lennox-Gastaut Syndrome: Results of an Effect-Size Analysis (P06.121)

Neurology ◽  
2012 ◽  
Vol 78 (Meeting Abstracts 1) ◽  
pp. P06.121-P06.121
Author(s):  
J. Cramer ◽  
C. Sabin ◽  
A. Gani ◽  
C. Francois
Keyword(s):  
Effect Size ◽  
Indirect Comparison ◽  
Size Analysis

scholarly journals Impact of heterogeneity and effect size on the estimation of the optimal information size: analysis of recently published meta-analyses

BMJ Open ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. e015888 ◽  
Author(s):  
Josep M Garcia-Alamino ◽  
Clare Bankhead ◽  
Carl Heneghan ◽  
Nicola Pidduck ◽  
Rafael Perera
Keyword(s):  
Systematic Reviews ◽  
Effect Size ◽  
Sequential Analysis ◽  
Trial Sequential Analysis ◽  
Size Analysis ◽  
Cochrane Reviews ◽  
Number Of Patients ◽  
Optimal Information ◽  
Meta Analyses ◽  
The Impact

ObjectiveTo estimate the proportion of systematic reviews that meet the optimal information size (OIS) and assess the impact heterogeneity and effect size have on the OIS estimate by type of outcome (eg, mortality, semiobjective or subjective).MethodsWe carried out searches of Medline and Cochrane to retrieve meta-analyses published in systematic reviews from 2010 to 2012. We estimated the OIS usingTrial Sequential Analysissoftware (TSA V.0.9) and based on several heterogeneity and effect size scenarios, stratifying by type of outcome (mortality/semiobjective/subjective) and by Cochrane/non-Cochrane reviews.ResultsWe included 137 meta-analyses out of 218 (63%) potential systematic reviews (one meta-analysis from each systematic review). Of these reviews, 83 (61%) were Cochrane and 54 (39%) non-Cochrane. The Cochrane reviews included a mean of 6.5 (SD 6.1) studies and the non-Cochrane included a mean of 13.2 (SD 10.2) studies. The mean number of patients was 2619.1 (SD 6245.8 or median 586.0) for the Cochrane and 19 888.5 (SD 32 925.7 or median 6566.5) patients for the non-Cochrane reviews. The percentage of systematic reviews that achieved the OIS for all-cause mortality outcome were 0% Cochrane and 25% for non-Cochrane reviews; for semiobjective outcome 17% for Cochrane and 46% for non-Cochrane reviews and for subjective outcome 45% for Cochrane and 72% for non-Cochrane reviews.ConclusionsThe number of systematic reviews that meet an optimal information size is low and varies depending on the type of outcome and the type of publication. Less than half of primary outcomes synthesised in systematic reviews achieve the OIS, and therefore the conclusions are subject to substantial uncertainty.

scholarly journals Randomized trial of transcranial alternating current stimulation for treatment of auditory hallucinations in schizophrenia

2018 ◽  
Vol 51 ◽  
pp. 25-33 ◽  
Author(s):  
Juliann M. Mellin ◽  
Sankaraleengam Alagapan ◽  
Caroline Lustenberger ◽  
Courtney E. Lugo ◽  
Morgan L. Alexander ◽  
...  
Keyword(s):  
Effect Size ◽  
Rating Scale ◽  
Auditory Hallucination ◽  
Alternating Current ◽  
Primary Outcome Measure ◽  
Auditory Hallucinations ◽  
Size Analysis ◽  
Symptom Improvement ◽  
Transcranial Alternating Current Stimulation ◽  
Secondary Outcomes

AbstractBackground:Approximately 30% of patients with schizophrenia experience auditory hallucinations that are refractory to antipsychotic medications. Here, we evaluated the feasibility and efficacy of transcranial alternating current stimulation (tACS) that we hypothesized would improve auditory hallucination symptoms by enhancing synchronization between the frontal and temporo-parietal areas of the left hemisphere.Method:22 participants were randomized to one of three arms and received twice daily, 20 min sessions of sham, 10 Hz 2 mA peak-to-peak tACS, or 2 mA tDCS over the course of 5 consecutive days. Symptom improvement was assessed using the Auditory Hallucination Rating Scale (AHRS) as the primary outcome measure. The Positive and Negative Syndrome Scale (PANSS) and the Brief Assessment of Cognition in Schizophrenia (BACS) were secondary outcomes.Results:Primary and secondary behavioral outcomes were not significantly different between the three arms. However, effect size analyses show that tACS had the greatest effect based on the auditory hallucinations scale for the week of stimulation (1.31 for tACS; 1.06 and 0.17, for sham and tDCS, respectively). Effect size analysis for the secondary outcomes revealed heterogeneous results across measures and stimulation conditions.Conclusions:To our knowledge, this is the first clinical trial of tACS for the treatment of symptoms of a psychiatric condition. Further studies with larger sample sizes are needed to better understand the effect of tACS on auditory hallucinations.

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