Meta-Analysis
Copyright ©The Author(s) 2021.
World J Gastrointest Oncol. Feb 15, 2021; 13(2): 131-146
Published online Feb 15, 2021. doi: 10.4251/wjgo.v13.i2.131
Figure 1
Figure 1 Flow chart of study selection. aReasons for exclusion: other age threshold: 49; benign disease: 1; case series: 1; conference abstract: 38; duplicate: 4; letter to the editor: 2; no comparison between older and younger patients: 28; non-surgical treatments: 3; other cancer types: 2; overlapping study cohorts: 3; review: 2; too many palliative patients: 20; unclear study design: 4.
Figure 2
Figure 2 Primary outcomes in forest plots. RR: Relative Risk; CI: Confidence Interval; age threshold = 75 years.
Figure 3
Figure 3 Funnel plots of primary outcomes. Age threshold = 75 years.
Figure 4
Figure 4 Secondary outcomes in forest plots. RR: Relative risk; CI: Confidence interval. Age threshold = 75 years.