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. 2013 Sep 18;8(9):e75357. doi: 10.1371/journal.pone.0075357

Figure 5. Log hazard ratios (HR) and their 95%-confidence intervals, with simplified model omitting parameter GraftMat.

Figure 5

Absolute values of HR should not be compared with those in Figure 4 because reference values or HR are not comparable. n: number of implants.