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Table 2 Characteristics of visits stratified to emergency room imaging positivity

From: Emergency room imaging in pediatric patients with cancer: analysis of the spectrum and frequency of imaging modalities and findings in a tertiary cancer center and their relationship with survival

Characteristic All visits (N = 348) ER imaging negative (N = 156) ER imaging positive (N = 192) p-value
Age a 11 (6, 15) 11 (6, 15) 10 (6, 15) 0.82
Gender     0.83
 Male 184 (52.9%) 84 (53.8%) 100 (52.1%)  
 Female 164 (47.1%) 72 (46.2%) 92 (47.9%)  
Type of primary cancer     0.92
 Bone & soft tissue tumors 87 (25.0%) 41 (26.3%) 46 (24.0%)  
 Hematologic malignancies 95 (27.3%) 45 (28.8%) 50 (26.0%)  
 Neuroblastoma 62 (17.8%) 28 (17.9%) 34 (17.7%)  
 Central nervous system tumors 53 (15.2%) 22 (14.1%) 31 (16.1%)  
 Retinoblastoma 14 (4.0%) 5 (3.2%) 9 (4.7%)  
 Other tumors 37 (10.6%) 15 (9.6%) 22 (11.5%)  
Ethnicity     0.28
 White 186 (53.4%) 83 (53.2%) 103 (53.6%)  
 Hispanic 49 (14.1%) 18 (11.5%) 31 (16.1%)  
 Black 39 (11.2%) 21 (13.5%) 18 (9.4%)  
 Asian 32 (9.2%) 18 (11.5%) 14 (7.3%)  
 Oher or unknown 42 (12.1%) 16 (10.3%) 26 (13.5%)  
Admission 196 (56.3%) 63 (40.4%) 133 (69.3%) <0.01
Reason for visit
 Chest symptoms 100 (28.7%) 43 (27.6%) 57 (29.7%) 0.75
 Fever 99 (28.4%) 48 (30.8%) 51 (26.6%) 0.46
 Neurological symptoms 64 (18.4%) 24 (15.4%) 40 (20.8%) 0.24
 GI symptoms 63 (18.1%) 29 (18.6%) 34 (17.7%) 0.94
 Abdominal pain 57 (16.4%) 23 (14.7%) 34 (17.7%) 0.55
 Laboratory test abnormality 25 (7.2%) 9 (5.8%) 16 (8.3%) 0.48
 Extremity complaints 18 (5.2%) 7 (4.5%) 11 (5.7%) 0.78
 Evaluation of disease 13 (3.7%) 1 (0.6%) 12 (6.2%) 0.01
 Device 13 (3.7%) 8 (5.1%) 5 (2.6%) 0.34
 Wound or treatment-related 12 (3.4%) 7 (4.5%) 5 (2.6%) 0.51
 Trauma 10 (2.9%) 4 (2.6%) 6 (3.1%) >0.99
 Genitourinary symptoms 9 (2.6%) 1 (0.6%) 8 (4.2%) 0.05
 Back pain/discomfort 7 (2.0%) 2 (1.3%) 5 (2.6%) 0.47
 Lymphadenopathy 2 (0.6%) 0 (0.0%) 2 (1.0%) 0.5
Modality     <0.01
 Radiograph 195 (56.0%) 115 (73.7%) 80 (41.7%)  
 Computed tomography 88 (25.3%) 22 (14.1%) 66 (34.4%)  
 Magnetic resonance imaging 40 (11.5%) 12 (7.7%) 28 (14.6%)  
 Ultrasound 21 (6.0%) 7 (4.5%) 14 (7.3%)  
 Nuclear Medicine 4 (1.1%) 0 (0.0%) 4 (2.1%)  
  1. Unless otherwise indicated, data are no. of visits with percentage in parenthesis
  2. Unless otherwise indicated, chi-square test was used for statistical analysis
  3. a Data are median with interquartile range in parentheses
  4. ER emergency room
  5. Wilcoxon rank-sum test
  6. Fisher's exact test