4 META-ANALYSIS
The statistical analysis of the data will be performed by an external
collaborating professional and interpreted by the main researcher. For
data analysis, a database will be built on a Microsoft Excel spreadsheet
that will be exported to the Minitab 18® statistical program (version
18, Minitab, LLC, State College, Pennsylvania, USA) (Minitab®) and also
to OriginPro® 9 (DPR Group, Inc., Northampton, Massachusetts, USA)
(Moberly, Bernards, Waynant, 2018). Common descriptive statistical
analysis will be performed, obtaining the values of total N, mean,
standard deviation, confidence interval (CI), and percentage (frequency)
for all predictors. The One-Way test (ANOVA) will be applied, adopting
the α level less than 0.05 with a statistically significant difference
for the 95% CI. The value of R-sq (I2) will be analyzed to discover the
inaccuracy or heterogeneity of the analyzes. The S factor will indicate
the standard deviation between the data points and the adjusted values.