Fig. 1From: Spontaneous pneumomediastinum: a surrogate of P-SILI in critically ill COVID-19 patientsEvolution of the ROX index between ICU admission and the occurrence of SP. ROX index was at 3.94 [3.15–5.55] (missing data = 5) on ICU admission vs. 3.25 [2.73–4.02] (missing data = 11) the day preceding SP (P = 0.1)Back to article page