Table 4. Change in respiratory function parameters with respect to the first day of follow-up in patients treated with azithromycin.

	Azithromycin	Control	Mean difference (IC95%)	p
Saturation increment
48 hours	-0.82 (n29)	-0.81 (n29)	0.02 (-1.35; 1.39)	0.980
72 hours	-0.58 (n29)	-0.43 (n25)	0.15 (-1.18; 1.48)	0.821
96 hours	-0.91 (n27)	-0.40 (n24)	0.51 (-0.72; 1.74)	0.411
FiO2 increment
48 hours	4.93 (n29)	3.33 (n29)	-1.60 (-11.36;8.16)	0.744
72 hours	9.07 (n29)	0.56 (n27)	-8.51 (-21.77; 4.75)	0.203
96 hours	6.65 (n27)	-5.45 (n23)	-12.10 (-23.70; -0.50)	0.041
SAFI increment
48 hours	-0.19 (n29)	-0.01 (n29)	0.19 (-0.26; 0.64)	0.408
72 hours	-0.23 (n29)	0.34 (n25)	0.57 (0.01; 1.14)	0.046
96 hours	-0.08 (n27)	0.40 (n23)	0.49 (-0.08; 1.05)	0.074

FiO₂: fraction of inspired oxygen.