Table 2.

Data on Study End Points

End pointEarly TreatmentLate TreatmentP ValueStatistics
Mechanical ventilation and/or death <7 days, number (%)7 (21)17 (63).0013Logistic regression
Mechanical ventilation and/or death before discharge, number (%)9 (27)19 (70).004χ2
Mechanical ventilation before discharge, number (%)8 (25)17 (68).005χ2
a/APo2 after 6 hours, mean ± SD0.48 ± 0.180.36 ± 0.18.02Multiple regression