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. 2023 Sep 29;208(12):1293–1304. doi: 10.1164/rccm.202304-0637OC

Table 4.

Safety Outcomes in the Final Analysis Population Assigned to Treatment

  Treatment Group
(n = 94)
Control Group
(n = 99)
Difference or RR (95% CrI)
Safety outcomes
Acute kidney injury 65 (69.1) 69 (69.7) RR, 0.82 (0.39–1.70)
 Class 1 17 (18.1) 20 (20.2)  
 Class 2 11 (11.7) 22 (22.2)  
 Class 3 37 (39.3) 27 (27.2)  
RRT 33 (35.1) 22 (22.2) RR, 1.65 (0.78–3.56)
Hemodynamic instability during weaning 0 (0)    
MetHb > 5%
 Events/treatment days overall 8/1,282    
 Events/treatment days at 80 ppm 7/292    
 Events requiring dose reduction 5    
MetHb highest daily level, %
 Overall 1.4 (0.7–1.5)    
 At 80 ppm 2.2 (1.5–3.0)    
NO2 > 3 ppm
 Events/treatment days overall 1/1,282    
 Events/treatment days at 80 ppm 1/292    
 Events requiring dose reduction 1    
NO2 highest daily level, ppm
 Overall 0.8 (0.0–1.0)    
 At 80 ppm 1.0 (1.0–1.8)    

Definition of abbreviations: CrI = credible interval; MtHb = methemoglobin; RR = risk ratio; RRT = renal replacement therapy.

Data are presented as median (interquartile range), n, or n (%).