Meta-Analysis
Copyright ©The Author(s) 2023.
World J Meta-Anal. Jun 18, 2023; 11(5): 228-252
Published online Jun 18, 2023. doi: 10.13105/wjma.v11.i5.228
Figure 1
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Figure 1  Literature searches, lung cancer.
Figure 2
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Figure 2 Literature searches, chronic obstructive pulmonary disease. COPD: Chronic obstructive pulmonary disease.
Figure 3
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Figure 3 Forest plot for lung cancer and current vs never cigarette smoking. A: North America; B: Europe; C: Japan.
Figure 4
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Figure 4  Forest plot for chronic obstructive pulmonary disease and current vs never cigarette smoking.