Secondary outcomes in serial ultrasound and the control group
| Serial ultrasound group (n=102) | Control group (n=104) | Risk difference (95% CI) | P value | |||
| Length of hospital stay, days | 4 | (1–7) | 3 | (0–6) | 3.9 (−9.8 to 17.5) | 0.58 |
| Readmissions | ||||||
| 0–7 days | 15 | (14.7) | 10 | (9.6) | 5.1 (−3.8 to 14.0) | 0.26 |
| 8–30 days | 15 | (14.7) | 7 | (6.7) | 8.0 (−0.4 to 16.4) | 0.06 |
| In-hospital mortality | 4 | (3.9) | 4 | (3.8) | 0.1 (−5.2 to 5.4) | 0.98 |
| Mortality | ||||||
| 0–7 days | 2 | (2.0) | 3 | (2.9) | −0.9 (−5.1 to 3.3) | 0.67 |
| 8–30 days | 2 | (2.0) | 2 | (1.9) | 0.0 (−3.7 to 3.8) | 0.98 |
| No. of correct final ED diagnoses | 64 | (62.7) | 59 | (56.7) | 6.0 (−7.4 to 19.4) | 0.38 |
Data are n (%) or median (IQR).