Modified ROX index - validity

Modified ROX index [(PaO2/FiO2)/Respiratory rate) was suggested by me (Habib Md Reazaul Karim, and Antonio M Esquinas in 2019 (https://doi.org/10.1164/rccm.201902-0419LE)

I am pleased to find the index has been accepted by different researchers and validated. Read Modified ROX for HFNC failure (validated in COVID-19 patients) at https://www.cureus.com/articles/130228#!/

Modified ROX [(PaO2/FiO2)/RR] for predicting NIV failure in acute respiratory failure. Read the article by Duan J et al. https://annalsofintensivecare.springeropen.com/articles/10.1186/s13613-022-01085-7