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. 2021 Dec 14;39(2):88–93. doi: 10.1136/emermed-2021-211253

Table 2.

Outcomes within 30 days of diagnosis

Outcomes Total (n=40) HBO2
(n=20)
Control (n=20) P value Effect size (95% CI)
Days to normalisation* 5.0 (3.0; 9.0) 3.0 (1.0; 4.5) 9.0 (5.5; 12.5) <0.010 HR 6.9 (2.9 to 16.2)
SpO2 ≥93% at 3 days, n (%) 12 (30) 11 (55) 1 (8) 0.001 OR 23.2 (1.6 to 329.6)
SpO2 ≥93% at 5 days, n (%) 27 (68) 19 (95) 8 (40) <0.001 OR 28.5 (1.8 to 447.4)
SpO2 ≥93% at 10 days, n (%) 33 (83) 20 (100) 13(65) 0.004
SpO2 ≥93% at 15 days, n (%) 36 (90) 20 (100) 16 (80) 0.106
Acute respiratory distress, n (%) 4 (10) 1 (5) 3 (15) 0.605 OR 0.3 (0.0 to 3.4)
Mechanical ventilation, n (%) 4 (10) 1 (5) 3 (15) 0.605 OR 0.3 (0.0 to 3.4)
Death, n (%) 2 (5) 1 (5) 1 (5) 1.000 OR 1.0 (0.1 to 17.8)

* Median (25th percentile; 75th percentile).

SpO2, oxygen saturation.