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Figure 2 Mortality rates according to deciles of hematocrit (Hct). Compared with the reference group (tenth decile, Hct >48.3%), higher mortality was only present in the first decile (Hct <35.4%), in which there was a 72% higher risk of death (hazard ratio 1.72, 95% confidence interval 1.13 to 2.62) after adjustment for potential confounders (Table 2, footnote).
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