Figure 3.
Forest plot for primary outcome analysis on survival.
Notes: Hazard ratio for progression, or death along the x-axis, and results from all seven studies, with red dots representing effect estimates and lines through them representing 95% CIs. The percentage weight is listed next to each study. Data on the heterogeneity of the meta-analysis are shown at the bottom left, with the relevant measure being the I2 score. The black diamond represents the overall effect measure, which lies clear of the line of no effect, showing a benefit for checkpoint inhibitors compared to control intervention, with an overall hazard ratio of 0.54 (95% CI: 0.44–0.67).
Abbreviations: IV, inverse variance; CI, confidence interval.