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. 2013 Jan 30;8(1):e55128. doi: 10.1371/journal.pone.0055128

Figure 5. Forest plot of the HR for OS for standard 1 and standard 2. a: standard 1; b: standard 2.

Figure 5

The squares and horizontal lines correspond to the study-specific HR and 95% CI. The area of the squares reflects the weight (inverse of the variance). The diamond represents the summary HR and 95% CI.