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Comparison of the fixed ratio and the<em> Z</em>-score of FEV<sub>1</sub>/FVC in the elderly population: a long-term mortality analysis from the Third National Health and Nutritional Examination Survey

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Figure

Figure 1 Flowchart of subject selection from the Us nahnes III.Abbreviations: Us nhanes III, Third national health and nutrition examination survey in the Us; FeV1, forced expiratory volume in 1 second; FVC, forced vital capacity.
Figure 4). When the reference values from GLI were used for
Table 2 Conventional and optimal cutoffs and the performance indices of fixed ratio for 10-year all-cause, respiratory, and COPD mortalities in the elderly population
Table 3 Conventional and optimal cutoffs and the performance indices of the Z-score of FeV1/FVC for 10-year all-cause, respiratory, and COPD mortalities in the elderly population
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