Table 1.
Summary of characteristics of RSV-infected children according to oxygen saturation (SpO2) levels above or below 90%.
| Characteristic | All | Non-severe hypoxemia (SpO2 > 90%) |
Severe hypoxemia (SpO2 ≤ 90%) | p-value |
|---|---|---|---|---|
| No. of patients | 121 | 95 | 26 | |
| Age (weeks), median (IQR) | 8.7 (4.4–17.4.3) | 8.7 (4.4–21.8) | 6.6 (4.3–13.1) | 0.475 |
| <6 weeks, N (%) | 49 (40.8%) | 38 (40.0%) | 11 (44%) | 0.717 |
| Gender (male), N (%) | 67 (55.4%) | 56 (52.6%) | 11 (14.4%) | 0.130 |
| Weight percentile, median (IQR) | 45 (26–73) | 46 (28–71) | 33.5 (19–74.5) | 0.582 |
| Height percentile, median (IQR) | 57 (33–78) | 62 (38–79) | 40 (26.5–68) | 0.125 |
| Breastfeeding, N (%) | 91 (79.8%) | 73 (82.0%) | 18 (72.0%) | 0.270 |
| Gestation age (weeks), median (IQR) | 39 (38–40) | 39 (38–40) | 40 (38–40) | 0.686 |
| Prematurity, N (%) | ||||
| <37 weeks | 15 (13.4%) | 12 (13.5%) | 3 (13%) | 0.999 |
| ≤34 weeks | 4 (3.3%) | 3 (3.2%) | 1 (3.8%) | 0.999 |
| Respiratory symptoms onset (days), median (IQR) | 3 (2–4) | 3 (2–4) | 2 (2–4) | 0.208 |
| Bronchiolitis severity, N (%) | ||||
| Mild | 41 (33.9%) | 30 (31.6%) | 11 (42.2%) | 0.306 |
| Moderate | 76 (62.8%) | 64 (67.4%) | 12 (46.2%) | 0.047 |
| Severe | 4 (3.3%) | 1 (1%) | 3 (11.6%) | 0.008 |
Statistics: Values are expressed as the median (interquartile range) for continuous variables and absolute count (percentage) for categorical variables. The statistically significant differences are shown in bold.
IQR, interquartile range; RSV, Respiratory syncytial virus.