Thesis

36 Chapter 2 Table 4 Continued Prolonged ED-LOS Variable All patients (n=2000) No (n=1495) Yes (n=505) p-value Assigned urgency, n (%) <0.0012 U0 101 (5.1) 91 (6.1) 10 (2.0) U1 - U2 876 (44) 625 (42) 251 (50) U3 - U4 751 (38) 537 (36) 214 (42) U5 or missing 272 (14) 242 (16) 30 (5.9) Destination after ED visit, n (%) <0.0012 Admitted to hospital 1251 (63) 860 (58) 391 (77) Discharged 735 (37) 624 (42) 111 (22) Deceased at the ED 14 (0.70) 11 (0.74) 3 (0.59) Clinical factors Presenting complaint, n (%) <0.0012 Internal medicine 1032 (52) 720 (48) 312 (62) Trauma 329 (16) 270 (18) 59 (12) Neurological 285 (14) 228 (15) 57 (11) Altered consciousness 119 (6.0) 79 (5.3) 40 (7.9) Sequelae of medical procedure 112 (5.6) 98 (6.6) 14 (2.8) Other 64 (3.2) 49 (3.3) 15 (3.0) High impact trauma 34 (1.7) 29 (1.9) 5 (0.99) Resuscitation 25 (1.3) 22 (1.5) 3 (0.59) Diagnosis at ED visit, n (%) <0.0012 Internal medicine 642 (32) 441 (30) 201 (40) Neurology 339 (17) 275 (18) 64 (13) Surgical, other than trauma 325 (16) 237 (16) 88 (17) Cardiology or pulmonology 308 (15) 207 (14) 101 (20) Trauma 237 (12) 197 (13) 40 (7.9) Other 106 (5.3) 99 (6.6) 7 (1.4) Resuscitation 26 (1.3) 23 (1.5) 3 (0.59) Multitrauma 17 (0.85) 16 (1.1) 1 (0.2) Treating specialty, n (%) <0.0012 Emergency physician 729 (36) 569 (38) 160 (32) Internal medicine 462 (23) 295 (20) 167 (33) Neurology 216 (11) 173 (12) 43 (8.5) Surgery 193 (9.7) 134 (9.0) 59 (12) Other 173 (8.7) 153 (10) 20 (4.0) Pulmonology 123 (6.2) 77 (5.2) 46 (9.1) Geriatrics 104 (5.2) 94 (6.3) 10 (2.0) 1Student t-test; 2Chi square; LOS: length of stay; ED: emergency department; HEMS= Helicopter Emergency Medical Service; CACI: Charlson Age-Comorbidity Index

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