All subject characteristics compared with clinical diagnosis
| Variable | Pneumonia (n=38) | Asthma/viral illness (non-RSV positive) (n=31) | RSV positive viral illness (n=12) | CHF (n=10) | p value* | |
| Chest X-ray | Abnormal | 92.1% (78.6%–98.3%) | 6.45% (0.791%–21.4%) | 25% (5.49%–57.2%) | 60% (26.2%–87.8%) | <0.0001 |
| Normal | 0% (0%–9.25%) | 64.5% (45.4%–80.8%) | 8.33% (0.211%–38.5%) | 0% (0%–30.8%) | ||
| Indeterminate | 7.89% (1.66%–21.4%) | 29% (14.2%–48%) | 66.7% (34.9%–90.1%) | 40% (12.2%–73.8%) | ||
| Ultrasound | Abnormal | 94.7% (82.3%–99.4%) | 6.45% (0.791%–21.4%) | 16.7% (2.09%–48.4%) | 80% (44.4%–97.5%) | <0.0001 |
| Normal | 0% (0%–9.25%) | 80.6% (62.5%–92.5%) | 33.3% (9.92%–65.1%) | 0% (0%–30.8%) | ||
| Indeterminate | 5.26% (0.644%–17.7%) | 12.9% (3.63%–29.8%) | 50% (21.1%–78.9%) | 20% (2.52%–55.6%) | ||
Results separated by clinical diagnosis for all subjects, reported as percentage (95% CI).
*Chi-squared test comparing all clinical diagnoses.
CHF, congestive heart failure; RSV, respiratory syncytial virus.