There were no differences between children with and without CPT in discharge rate ( 92 % vs. 87 % ) , clinical score ( median [ IQR ] : 2.8 [ 2.2-3 .3 ] vs. 3.4 [ 2.8-4 .1 ] ) and SpO2 = ( 96.4 [ 95.7-97 .1 ] vs. 96.0 [ 94.9-96 .5 ] ) after the first hour of treatment or in the number of hospital admissions after the second hour .