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Variability analysis of the respiratory volume based on non-linear prediction methods

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This work proposed and studied a method of automatically classifying respiratory volume signals as high or low variability by means of non-linear analysis of the respiratory volume. The analysis used volume signals generated by the respiratory system to construct a model of its dynamics and to estimate the quality of the predictions made with the model. Different methods of prediction evaluation, prediction horizons and embedding dimensions were also analysed. Assessment of the method was made using a database that contained 40 respiratory volume signals classified using clinical criteria into two classes: low or high variability. The results obtained using the method of surrogate data provided evidence of non-linear determinism in the respiratory volume signals. A discriminant analysis carried out using non-linear prediction variables classified the respiratory volume signals with an accuracy of 95%.

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Correspondence to P. Caminal.

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Caminal, P., Dominge, L., Giraldo, B.F. et al. Variability analysis of the respiratory volume based on non-linear prediction methods. Med. Biol. Eng. Comput. 42, 86–91 (2004).

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