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Table 1 Demographic and clinical characteristics by time of admission

From: Linking the severity of illness and the weekend effect: a cohort study examining emergency department visits

  Weekday
(From 7.00 am on Monday to 2.59 p.m. on Friday)
Weekend
(From 3.00 p.m. on Friday to 6.59 a.m. on Monday)
Daytime (7.00 a.m. – 2.59 p.m.) Evening (3.00 p.m. – 10.59 p.m.) Nighttime (11.00 p.m. – 6.59 a.m.) Daytime (7.00 a.m. – 2.59 p.m.) Evening (3.00 p.m. – 10.59 p.m.) Nighttime (11.00 p.m. – 6.59 a.m.)
n (% of group)
Overall 15,120 (42,6) 7185 (20,3) 1670 (4,7) 3566 (10,1) 5766 (16,3) 2152 (6,1)
Age groups
 0–19 2464 (16,3) 1558 (21,7) 189 (11,3) 543 (15,2) 1147 (19,9) 317 (14,7)
 20–39 3007 (19,9) 1710 (23,8) 484 (29,0) 822 (23,0) 1442 (25,0) 692 (32,2)
 40–59 3437 (22,7) 1505 (21,0) 370 (22,2) 774 (21,7) 1236 (21,4) 467 (21,7)
 60–79 4061 (26,9) 1536 (21,4) 413 (24,7) 891 (25,0) 1217 (21,4) 451 (21,0)
  > 80 2151 (14,2) 876 (12,2) 214 (12,8) 536 (15,0) 724 (12,6) 225 (10,5)
Gender
 Female 7549 (50,0) 3693 (51,4) 788 (47,2) 1769 (49,6) 2921 (50,7) 972 (45,2)
 Male 7571 (50,1) 3492 (48,6) 882 (52,8) 1797 (50,4) 2845 (49,3) 1180 (54,8)
CCI score
 Low (0) 10,441 (69,1) 5162 (71,8) 1148 (68,7) 2478 (69,5) 4240 (73,5) 1541 (71,6)
 Moderat (1–2) 3044 (20,1) 1382 (19,2) 337 (20,2) 730 (20,5) 1072 (18,6) 348 (17,8)
 High (> = 3) 1635 (10,8) 641 (8,9) 185 (11,1) 358 (10,0) 454 (7,9) 227 (10,6)
Admission source
 GP 10,741 (71,0) 5875 (81,8) 1223 (73,2) 2791 (78,3) 4759 (82,5) 1437 (66,8)
 Another hospital department 2663 (17,6) 489 (6,8) 89 (5,3) 403 (11,3) 357 (6,2) 87 (4,0)
 No reference 512 (3,4) 197 (2,7) 32 (1,9) 82 (2,3) 150 (2,6) 133 (6,2)
 Other 1200 (7,9) 621 (8,6) 326 (19,5) 290 (8,1) 499 (8,7) 495 (23,0)
Primary diagnosis
 Infectious diseases 1034 (6,8) 374 (5,2) 80 (4,8) 222 (6,2) 282 (4,9) 88 (4,1)
 Neoplasm 10 (0,1) 5 (0,1) 1 (0,1) 3 (0,1) 1 (0,0) 0 (0)
 Hematological diseases 162 (1,1) 43 (0,6) 2 (0,1) 18 (0,5) 18 (0,3) 0 (0)
 Endocrine and nutritional diseases 136 (0,9) 107 (1,5) 20 (1,2) 28 (0,8) 60 (1,0) 19 (0,9)
 Mental and behavioral disorders 91 (0,6) 99 (1,4) 36 (2,2) 22 (0,6) 75 (1,3) 101 (4,7)
 Diseases of the nervous system 87 (0,6) 45 (0,6) 9 (0,5) 33 (0,9) 54 (0,9) 13 (0,6)
 Diseases of the circulatory system 365 (2,4) 115 (1,6) 26 (1,6) 67 (1,9) 76 (1,3) 29 (1,4)
 Diseases of the respiratory system 99 (0,7) 53 (0,7) 9 (0,5) 19 (0,5) 31 (0,5) 8 (0,4)
 Diseases of the digestive system 388 (2,6) 130 (1,8) 48 (2,9) 92 (2,6) 127 (2,2) 60 (2,8)
 Diseases of the musculoskeletal system 312 (2,1) 84 (1,2) 13 (0,8) 50 (1,4) 62 (1,0) 24 (1,1)
 Diseases of the genitourinary system 179 (1,2) 63 (0,9) 21 (1,1) 59 (1,7) 54 (0,9) 25 (1,2)
 Injury and poisoning 4038 (26,7) 2667 (37,1) 426 (25,5) 1231 (34,5) 2175 (37,7) 750 (34,9)
 Factors influencing health status 6854 (45,3) 2738 (38,1) 727 (43,5) 1421 (39,9) 2232 (38,7) 758 (35,2)
 Symptoms, signs, and abnormal findings 1276 (8,4) 615 (8,6) 239 (14,3) 265 (7,4) 461 (8,0) 256 (11,9)
 Other 89 (0,6) 47 (0,7) 13 (0,8) 36 (1,0) 58 (1,0) 21 (1,0)