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Table 2 Expert experience features

From: Efficacy prediction of noninvasive ventilation failure based on the stacking ensemble algorithm and autoencoder

Before NIV (H0)

After 1 h of NIV (H1)

Unit

Oxygenation index/H0RR

H1oxygenation index/H1RR

mmHg/breath/min

Age*H0RR

Age*H1RR

year*breath/min

H0RR*H0HR

H1RR*H1HR

breath/min*beat/min

H0RR*H0HR*H0FIO2

H1RR*H1HR*H1FIO2

breath/min*beat/min

  1. NIV noninvasive ventilation, RR respiratory rate, HR heart rate, FIO2 fraction of inspired oxygen
  2. H0 means the data collected before NIV. H1 means the data collected after 1 h of NIV