Association among chronic kidney disease, airflow limitation, and mortality in a community-based population: The Yamagata (Takahata) study.

In contrast, when renal function was evaluated using Cr, the adjusted hazard ratios showed a similar tendency, although they did not reach statistical significance in all categories: 1.47 (95% CI 0.69–2.84) in subjects with CKDcr alone, 1.76 (95% CI 0.97–3.06) in subjects with AFL alone, and 2.42 (95% CI 0.70–6.33) in subjects with both CKDcr and AFL, with subjects without both AFL and CKD as the reference (Table 2 ).

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