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Table 7 Comparison of Roca et al. cut-off for ROX using the ARF data in this study for HFNC success

From: Comparison of ROX index (SpO2/FIO2 ratio/respiratory rate) with a modified dynamic index incorporating PaO2/FIO2 ratio and heart rate to predict high flow nasal cannula outcomes among patients with acute respiratory failure: a single centre retrospective study

 

Sensitivity

Specificity

NPV

PPV

ROX at 2 h > 4.88

7.7%

100.0%

71.0%

100.0%

ROX at 6 h > 4.88

7.4%

98.6%

77.0%

100.0%

ROX at 12 h > 4.88

6.7%

100.0%

82.0%

100.0%

  1. NPV Negative predictive value, PPV Positive predictive value
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BMC Pulmonary Medicine

ISSN: 1471-2466

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