Table 2.

Sensitivity analysis.

Excluded studies	SMD (95% CI)	Heterogeneity
		I 2	p value
Dudani et al., 2021 [35]	0.87 (0.54-1.19)	86%	≤0.001
Devamsh and Raghavan, 2019 [36]	0.84 (0.50-1.19)	87%	≤0.001
Mendes et al., 2019 [37]	0.84 (0.50-1.18)	87.3%	≤0.001
Gubbala et al., 2019 [12]	0.79 (0.42-1.15)	88%	≤0.001
Hussain et al., 2017 [38]	0.74 (0.40-1.08)	85.5%	≤0.001
Kemba, 2017 [39]	0.79 (0.44-1.13)	88%	≤0.001
Liaqat et al., 2020 [40]	0.78 (0.43-1.14)	88%	≤0.001
Sefil et al., 2014 [41]	0.78 (0.43-1.13)	88%	≤0.001
Kumar et al., 2020 [42]	0.76 (0.42-1.11)	87.8%	≤0.001
Assulyn et al., 2020 [43]	0.84 (0.50-1.19)	86.5%	≤0.001
Alnabi and Hussain, 2020 [44]	0.66 (0.39-0.92)	79.1%	≤0.001
Palella et al., 2020 [45]	0.83 (0.47-1.18)	87.3%	≤0.001
Najeeb, [46]	0.67 (0.32-1.02)	90.7%	≤0.001
Combined	0.79 (0.46-1.12)	86.9%	≤0.001