Table 3. Summary of Egger’s and Begg’s test for publication bias.

p-value of <0.05 indicates publication bias

Outcomes	Egger’s test p-value	Begg’s test p-value
Overall POAF	0.002	0.008
POAF (Intraoperative Mg)	0.01	0.13
POAF (Postoperative Mg)	0.18	0.54
POAF (Intra- + Postoperative Mg)	0.84	1.00