Moreover, due to the limited number of specific events, many risk factor analyses in this study—particularly within comorbidity subgroups—yielded hazard ratios (HRs) with wide confidence intervals, and a large proportion of results did not reach statistical significance.
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Hemodialysis versus peritoneal dialysis in elderly ESRD patients: a retrospective cohort study on survival and the role of comorbidities.
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The sentences
Multivariate analysis indicated that a higher HDL-C level showed a trend toward being associated with reduced mortality risk, although this association was of borderline statistical significance.