Table 1 Demographics of study participantsa
Overall | Certain reports | Uncertain reports | p | |
|---|---|---|---|---|
N | 1006 | 796 | 210 | |
Boys | 567 (56.4) | 460 (57.8) | 107 (51.0) | 0.089 |
Additional CT | 85 (8.4) | 20 (2.5) | 65 (31.0) | < 0.001 |
Reason for additional CT Clinician decision Uncertain report Next step | 6 (7.0) 65 (75.6) 15 (17.4) | 6 (28.6) 0 (0.0) 15 (71.4) | 0 (0.0) 65 (100.0) 0 (0.0) | < 0.001 |
Ultrasound by residents | 382 (38.0) | 244 (30.7) | 138 (65.7) | < 0.001 |
Chief complaint Abdominal symptoms Fever Others | 750 (74.6) 113 (11.2) 143 (14.2) | 601 (75.5) 88 (11.1) 107 (13.4) | 149 (71.0) 25 (11.9) 36 (17.1) | 0.338 |
ED disposition Transfer out Admission AMA discharge Discharged | 17 (1.7) 344 (34.2) 3 (0.3) 642 (63.8) | 15 (1.9) 285 (35.8) 0 (0.0) 496 (62.3) | 2 (1.0) 59 (28.1) 3 (1.4) 146 (69.5) | 0.001 |
Urgent intervention | 232 (23.1) | 201 (25.3) | 31 (14.8) | 0.002 |
Surgical confirmation Concordant Discordant Transfer out | 216 (93.1) 2 (0.9) 14 (6.0) | 189 (94.0) 0 (0.0) 12 (6.0) | 27 (87.1) 2 (6.5) 2 (6.5) | 0.001 |
Age (months) | 52.2 [17.3, 92.6] | 47.5 [15.9, 87.6] | 65.8 [21.5, 108.0] | 0.001 |
ED LOS (minutes) | 292.0 [197.0, 440.5] | 284.5 [191.8, 439.5] | 321.0 [211.3, 441.5] | 0.042 |
Body weight (kg) | 16.05 [10.70, 25.85] | 15.93 [10.50, 24.30] | 18.00 [12.00, 33.53] | 0.001 |
Body habitus Overweight/obesity | 200 (19.9) | 146 (18.3) | 54 (25.7) | 0.022 |