Changes in adult and pediatric respiratory rate (RR) as a function of mask and time.
In both the adult and pediatric groups, mean ICO2 levels were significantly (These exploratory analyses should be taken with caution as the sample size for the pediatric subgroups compared to adults was small. Therefore, a Pearson’s correlation coefficient was computed to assess the linear relationship between age and ΔICO2. For the adult group, there was no linear correlation between ΔICO2 and age, r = −0.12, In the main two groups of adult and children, there was no significant change in respiratory rate, pulse oximetry, or heart rate after masking (