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. 2019 Mar 28;18:14. doi: 10.1186/s12941-019-0313-1

Table 3.

Tests for publication bias of the meta-analysis studies of maternal colonization with GBS in the Africa since 1989 to 31th January, 2019

Begg’s test
 Adj. Kendall’s score (P − Q) 43
 Std. dev. of score 145.26 (corrected for ties)
 Number of studies 57
 z 0.30
 Pr > |z| 0.767
 z 0.29 (continuity corrected)
 Pr > |z| 0.772 (continuity corrected)
Egger’s test
 Number of studies 57
 Root of MSE 0.3666
Std_eff Coef. Std. err. t P > |t| [95% conf. interval]
Slope 2.13663 2.378439 8.98 0.000 1.65998 2.61328
Bias 2.853829 1.287509 2.22 0.031 0.273604 5.434055

Test of H0: small-study effects exist as the p-value = 0.031

MSE Mean square error