Meta-Analysis
Copyright ©The Author(s) 2021.
World J Clin Cases. Dec 6, 2021; 9(34): 10626-10637
Published online Dec 6, 2021. doi: 10.12998/wjcc.v9.i34.10626
Figure 1
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Figure 1 Flow diagram of included and excluded studies. RCT: Randomized controlled trial.
Figure 2
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Figure 2 Risk of bias assessment for the primary studies.
Figure 3
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Figure 3 Forrest plots showing the effects of the intervention. Incidence of postoperative cough. CI: Confidence interval.
Figure 4
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Figure 4 Forrest plots showing the effects of the intervention. Incidence of postoperative hoarseness. CI: Confidence interval.
Figure 5
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Figure 5 Forrest plots showing the effects of the intervention. Incidence of a postoperative sore throat within 24 h. CI: Confidence interval.
Figure 6
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Figure 6 Forrest plots showing the effects of the intervention. Visual analogue scale of a postoperative sore throat at 1 h. CI: Confidence interval; SD: Standard deviation.
Figure 7
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Figure 7 Forrest plots showing the effects of the intervention. Visual analogue scale of a postoperative sore throat at 24 h. CI: Confidence interval; SD: Standard deviation.
Figure 8
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Figure 8 Funnel plot for evaluation of potential publication bias. RR: Risk ratio.