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Table 1 Summarization of the joint longitudinal-survival model

From: Continuously available ratio of SpO2/FiO2 serves as a noninvasive prognostic marker for intensive care patients with COVID-19

  Joint Model
Coefficient (95% CI) P
Longitudinal process (Linear Mixed-effects model)
 Day 0.017 (0.0054, 0.0286) 0.0040
 Respiratory support −1.138 (− 1.2697, − 1.0063) < 0.0001
 Day: Respiratory support −0.0767 (− 0.0981, − 0.0553) < 0.0001
Event Process (Weibull relative risk model)
 Age 0.047 (0.028, 0.066) < 0.0001
 Lymphocytes −1.1542 (− 1.7099, − 0.5985) < 0.0001
 D-Dimer 0.0332 (0.0179, 0.0485) < 0.0001
 Associationa −0.6012 (− 0.7547, − 0.4477) < 0.0001
  1. aAssociation between true measurements of SpO2/FiO2 marker and mortality risk