Figure 1
Star distribution plot.
Histograms showing the frequency of specific star ratings (0–5 stars) attained within each of the assessment domains.
Figure 2
Bubble plot.
Comprehensive bubble plot illustrating Newcastle-Ottawa Scale scores.
Figure 3
Radar chart.
Radar chart displaying normalized scores across NOS domains for each individual study.
Figure 4
Domain heatmap.
Heatmap matrix representing the categorical risk of bias (Low, Moderate, High) for each domain across all included studies.
Figure 5
Dot profile plot.
Profile plot depicting raw star ratings for the NOS domains for each study.
Figure 6
Donut domain chart.
Donut charts displaying the proportional distribution of risk levels (Low, Moderate, High) within each assessment domain.
Figure 7
Lollipop plot.
Lollipop chart ranking studies by their total NOS score, color-coded by overall risk of bias.
Figure 8
Stacked area plot.
Stacked area chart illustrating the percentage composition of risk categories.
Figure 9
Pie chart.
Pie chart summarizing the proportionate distribution of studies classified as Low, Moderate, and High overall risk of bias.
Figure 10
Line ordered plot.
Line graph tracking domain scores across studies ordered by increasing total NOS score to visualize quality trends.
Figure 11
Table view.
Tabular summary of individual domain scores, cumulative total scores, and overall risk of bias assessment for each study.
Figure 12
Radar (Thematic) chart.
Radar chart overlaying study performance across domains, with lines color-coded according to the overall risk of bias classification (Low, Moderate, High).