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Table 1 Baseline characteristics of survivors in medical and surgical intensive care units

From: Predictors associated with unplanned hospital readmission of medical and surgical intensive care unit survivors within 30 days of discharge

Characteristic Medical Surgical
No unplanned readmission Unplanned readmission No unplanned readmission Unplanned readmission
(n = 141,840) (n = 5583) (n = 328,086) (n = 11,142)
Hospital characteristics
 Teaching, n (%) 23,329 (17.2) 794 (14.9) 100,516 (31.9) 2840 (26.6)
 Size, n (%)     
 < 399 beds 49,826 (36.7) 2012 (37.7) 74,587 (23.7) 2654 (24.9)
 400–799 beds 62,135 (45.8) 2568 (48.1) 154,905 (49.2) 5575 (52.2)
 > 800 beds 23,715 (17.5) 759 (14.2) 85,576 (27.2) 2451 (22.9)
Age, mean (SD), year 69.7 (14.4) 70.1 (14.2) 68.2 (14.3) 68.7 (14.2)
Men, n (%) 89,565 (63.1) 3450 (61.8) 193,766 (59.1) 7109 (63.8)
BMI, mean (SD) 22.9 (4.4) 22.2 (4.2) 22.7 (4.3) 22.4 (4.0)
CCI, median (IQR) 1 (0–2) 1 (0–2) 1 (0–2) 1 (0–2)
 0, n (%) 52,063 (36.7) 1686 (30.2) 137,257 (41.8) 3836 (34.4)
 1, n (%) 45,830 (32.3) 1683 (30.1) 87,625 (26.7) 3040 (27.3)
 2, n (%) 26,809 (18.9) 1251 (22.4) 56,597 (17.3) 2146 (19.3)
 ≥ 3, n (%) 17,138 (12.1) 963 (17.2) 46,607 (14.2) 2120 (19.0)
Primary category of diagnosis on admission n (%)     
 Cardiac 69,882 (49.3) 2792 (50.0) 49,981 (15.2) 1807 (16.2)
 Respiratory 8626 (6.1) 549 (9.8) 5853 (1.8) 257 (2.3)
 Neurologic 31,903 (22.5) 799 (14.3) 61,290 (18.7) 1822 (16.4)
 Gastrointestinal 4336 (3.1) 252 (4.5) 25,473 (7.8) 1180 (10.6)
 Malignancy 7158 (5.0) 330 (5.9) 138,309 (42.2) 4645 (41.7)
 Metabolic and renal 5055 (3.6) 297 (5.3) 6507 (2.0) 329 (3.0)
 Other 14,880 (10.5) 564 (10.1) 40,673 (12.4) 1102 (9.9)
Coma on admission, n (%) 8697 (6.1) 285 (5.1) 6157 (1.9) 198 (1.8)
ICU stay, median (IQR), days 2 (1–4) 2 (1–5) 1 (1–3) 1 (1–3)
Hospital stay, median (IQR), days 18 (10–32) 21 (12–37) 22 (15–37) 26 (17–44)
 1–15 days, n (%) 62,371 (44.0) 1936 (34.7) 93,430 (28.5) 2364 (21.2)
 16–30 days, n (%) 41,160 (29.0) 1823 (32.7) 125,972 (38.4) 4125 (37.0)
 31–45 days, n (%) 16,266 (11.5) 783 (14.0) 49,191 (15.0) 1994 (17.9)
 > 45 days, n (%) 22,043 (15.5) 1041 (18.6) 59,493 (18.1) 2659 (23.9)
Discharge destination     
 Home, n (%) 107,590 (75.9) 4572 (81.9) 276,386 (84.2) 9821 (88.1)
 Other hospital, n (%) 29,937 (21.1) 698 (12.5) 46,441 (14.2) 1072 (9.6)
 Skilled nursing facility, n (%) 3099 (2.2) 230 (4.1) 2458 (0.7) 154 (1.4)
 Other, n (%) 1214 (0.9) 83 (1.5) 2800 (0.9) 95 (0.9)
  1. SD standard deviation, BMI body mass index, CCI Charlson comorbidity index, IQR interquartile range, ICU intensive care unit