Dissolution of calcite in the deep-sea; theoretical prediction for the case of uniform size particles settling into a well-mixed sediment

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ID: 298795
1982
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Abstract

Summary

Background and objectives

The association between mortality and physical activity based on self-report questionnaire in hemodialysis patients has been reported previously. However, because self-report is a subjective assessment, evaluating true physical activity is difficult. This study investigated the prognostic significance of habitual physical activity on 7-year survival in a cohort of clinically stable and adequately dialyzed patients.

Design, setting, participants, & measurements

A total of 202 Japanese outpatients who were undergoing maintenance hemodialysis three times per week at the hemodialysis center of Sagami Junkanki Clinic (Japan) from October 2002 to February 2012 were followed for up to 7 years. Physical activity was evaluated using an accelerometer at study entry and is expressed as the amount of time a patient engaged in physical activity on nondialysis days. Cox proportional hazard regression was used to assess the contribution of habitual physical activity to all-cause mortality.

Results

The median patient age was 64 (25th, 75th percentiles, 57, 72) years, 52.0% of the patients were women, and the median time on hemodialysis was 40.0 (25th, 75th percentiles, 16.8, 119.3) months at baseline. During a median follow-up of 45 months, 34 patients died. On multivariable analysis, the hazard ratio for all-cause mortality per 10 min/d increase in physical activity was 0.78 (95% confidence interval, 0.66–0.92; P=0.002).

Conclusions

Engaging in habitual physical activity among outpatients undergoing maintenance hemodialysis was associated with decreased mortality risk.
Reference Key
openalex_W4238677093 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Robin S. Keir
Journal american journal of science
Year 1982
DOI
10.2475/ajs.282.3.193
URL
https://ajsonline.org/article/60206.pdf
Keywords Keywords not found

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