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Mean ± standard deviation of the number of studies in the main health databases. CI indicates confidence interval.
| Database | Mean Value ± Standard Deviation | CI 95% |
|---|---|---|
| Pubmed | 2.03 ± 1.89 a | (0.19–3.92) |
| Google Scholar | 0.78 ± 0.90 b | (0.12–1.68) |
Legend: CI indicates confidence interval. Different letters indicate statistically significant differences between columns.
