TABLE 1

Patient characteristics and respiratory variables according to group at randomisation (before any study intervention)

HFNCControl
Patients133135
Characteristics
 Age days68±4865±46
 Weight kg5.1±1.54.9±1.4
 Female52 (39)65 (48)
 Gestational age weeks38±238±2
 Premature birth (<37 weeks)16 (12)16 (11)
Clinical variable
 Duration of symptoms before randomisation days3.3±2.13.1±2.2
 Temperature °C37.2±0.637.2±0.5
 Respiratory rate bpm53±1355±14
 Heart rate bpm156±18154±18
SpO2 % in room air90±390±3
 m-WCAS3.3±0.83.1±0.7
PtCO2# mmHg50±1150±10
 pH7.34±0.077.33±0.05
Viral cause
 Number tested103105
 RSV status85 (82)87 (82)
 Other5 (4)1 (1)

Data are presented as n, mean±sd or n (%). HFNC: high-flow nasal cannula; SpO2: pulse oximetry-measured oxygen saturation; m-WCAS: modified Wood clinical asthma score; PtCO2: transcutaneous carbon dioxide tension; RSV: respiratory syncytial virus. #: available in 49 and 43 patients in HFNC and control groups, respectively.