J.P.T. Higgins’s scientific contributions

... Two evaluators employed the Cochrane Risk of Bias Assessment Tool (Cochrane Handbook (Higgins and Green, 2008)) to assess the methodological quality of the studies. This tool categorizes bias ratings as low, high, or unclear within six different domains, including randomization, allocation concealment, blinding of participants and outcome assessors, incomplete outcome data, and selective reporting. ...

Reference:

The efficacy and safety of first-line monotherapies in primary therapy of invasive aspergillosis: a systematic review

... The primary outcome of interest was the standardized mean difference (Hedges g) 32 in PTSD severity between comparator groups. Random-effects NMAs were conducted given that high heterogeneity in outcomes was expected. ...

Reference:

Psychological Interventions for Pediatric Posttraumatic Stress Disorder: A Systematic Review and Network Meta-Analysis

... If we sort by sample size, then we can display the potential impact of the publication bias. By sorting the studies chronologically retrospectively, we were able to identify when the treatment effect first reached conventional levels of statistical significance (Egger, Smith, & Altman, 2001;Borenstein, Hedges, Higgins, & Rothstein, 2009). ...

Reference:

The Effect of Live Yeast Supplementation on Beef Cattle Performance: A Systematic Review and Meta-Analysis

... Thus, such approaches may serve to establish effect size estimates that are some what difficult to interpret. In meta-analyses, it is important to take account of the fact that experimental studies, such as randomized control trials (RCTs) of intervention studies, generate effect sizes in fundamentally different ways than do observational studies (Borenstein et al., 2009;Deeks et al., 2019). For instance, effects from RCTs (for quasi-experimental trials) are generated by comparing the degree to which groups change over time, whereas observational studies generate effects by quantifying the strength of association between variables. ...

Reference:

Longitudinal Job Crafting Research: A Meta-Analysis

... With the meta-analysis method, the similarities or differences between the results of primary studies on a particular subject can be synthesized by bringing them together. Although there are different perspectives in the literature, researchers generally define meta-analysis as an analysis method in which the statistical results of quantitative studies are systematically combined and evaluated (Borenstein et al., 2009;Glass, 1976;Lipsey & Wilson, 2001). This research employed a meta-analysis approach to investigate the outcomes of experimental studies focused on the impact of GenAI utilization on learning outcomes within educational settings. ...

Reference:

The effects of GenAI on learning performance: A meta-analysis study

... According to our hypothesis that moderators of individual responses differ from those at population levels, we grouped the effect sizes of metrics by the biological organization level. For each level, random-effect models were adopted to estimate the mean response of the metrics to droughts across the observations, to account for the interdependence among observations within each study in addition to the studies' sampling variances (Borenstein et al., 2009). Moreover, because effect sizes of various power were ...

Reference:

Biological traits and biome features mediate responses of terrestrial bird demography to droughts

... Effect size estimates were calculated (F values or t values were used when means and standard deviations were not reported) with a bias correction using Hedges' g (Lakens, 2013). To facilitate a precise estimate of the studies' effect and to account for variances within and between studies, the effect sizes and variances within individual studies were aggregated (Borenstein et al., 2009) based on the seven outcome categories described above using RStudio Version 4.3.3 (RStudio Team, 2024) and its available packages (compute.es, ...

Reference:

A Systematic Review of Implicit Versus Explicit Social Skills Group Programs in Different Settings for School-Aged Autistic Children and Adolescents

... Statistical heterogeneity was evaluated using Higgins I 2 statistics and the Cochrane Q (Chi 2 test) [18]. Meta-analysis was performed using Review Manager version 5.4 (Revman 5.4) and Comprehensive Meta-Analysis v3 (CMA V3) software [19,20]. The significant difference was revealed when the probability value (P) < 0.05. ...

Reference:

Factors predicting composite grafts survivability in patients with fingertip amputations; a systematic review and meta-analysis

... The current meta-analysis was conducted with a random-effects model using Comprehensive Meta-Analysis software (version 4, Biostat, Englewood, NJ, USA) [26]. A two-tailed p-value of less than 0.05 was established as the threshold for statistical significance. ...

Reference:

Clinical Efficacy of Cysteamine Application for Melasma: A Meta-Analysis

... By analyzing the effect sizes of predictors in different experiments, a weighted average effect size can emerge to produce a more generalizable effect size that may not have been apparent in any one study [62][63][64][65]. However, meta-analyses may be hindered by publication bias, as studies that do not present marked results tend not to be published [66]. A small-scale meta-analysis can be conducted using results from several experiments carried out by a research team. ...

Reference:

Who Learns from Reading Texts in General Chemistry?