Page 61 - Azerbaijan State University of Economics

Ercan Yılmaz, Gulnar Jafarova: Leadership and School Climate in Effective Schools: A Meta-
Analysis

Table 9: Begg and Mazumdar Rank Correlation for the Publication Partiality
of the Studies whose Effect Sizes have been Calculated based on the
relationship between school effectiveness and leadership and school climate

Independent Kendal’s S Tau Z P
variable
Leadership -3.00 -0.036 0.156 0.876
School Climate 7.00 0.400 1.127 0.260

For publication partiality based on Begg ve Mazumdar’ rank correlation, the basic
reference is the significance level of the calculated Tau value. This value being at a
significant level points out to publication partiality. In this respect, due to Tau value
not being found statistically significant for studies both based on the relationship of
leadership and school climate, it can be stated that there is no publication partiality
based on this analysis.

Table 10: Egger Regression Intercept Analysis for the Publication Partiality
Analysis of the Studies whose Effect Sizes have been calculated based on the
Relationship between School Effectiveness and Leadership and School Climate

Independent Interception SE t Df P
Variable
Leadership -4.16 7.34 0.568 9 0.584
School Climate 2.17 1.68 1.290 4 0.267

In the Egger regression intercept analysis, finding a statistically significant level just like
in Begg and Mazumdar’s rank correlation is interpreted as publication partiality. In this
respect, since the analysis results were not found at a statistically significant level in
both leadership and school climate independent variables (p>.05), it can be stated that
there is no publication partiality according to Egger regression intercept analysis.

Table 11: Duval and Tweedie’s Trim and Fill Analysis for the Publication
Partiality Analysis of the Studies whose Effect Sizes have been Calculated based on
the Relationship between School Effectiveness and Leadership and School Climate

Number of
Independent Missing Studies’ Effect Lower Upper Q Value
Variable Effect Size Size Limit Limit

Calculated 0.534 0.403 0.643 379.666
Value
Leadership
Corrected
Value - 0 0.534 0.403 0.643 379.666
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