Table 2. Association between clinical characteristics and the presence of fatigue.
Missing data: household composition = 1; caregiver = 1; social resource = 1; employment = 1.
IQR: interquartile range, ICU: intensive care unit.
| Variables | Fatigue (n = 46) | Non-fatigue (n = 27) | p-value |
| Age (years), median (IQR) | 74 (66.3-79.5) | 73 (63-81.5) | 0.882 |
| Male, n (%) | 19 (41) | 14 (52) | 0.538 |
| Body mass index, kg/m2, median (IQR) | 24 (22.2-25.4) | 22 (20.3-24.2) | 0.026 |
| Primary department, n (%) | |||
| Cardiovascular surgery | 11 (24) | 7 (26) | 0.879 |
| Respiratory surgery | 2 (4) | 1 (4) | |
| Gastrointestinal surgery | 8 (17) | 5 (19) | |
| Neurosurgery | 3 (7) | 1 (4) | |
| Orthopedic surgery | 2 (4) | 3 (11) | |
| Dermatology | 0 (0) | 1 (4) | |
| Otolaryngology | 4 (9) | 1 (4) | |
| Oral surgery | 1 (2) | 2 (7) | |
| Ophthalmology | 1 (2) | 0 (0) | |
| Urology | 1 (2) | 0 (0) | |
| Obstetrics | 2 (4) | 1 (4) | |
| Gynecology | 1 (2) | 1 (4) | |
| Cardiology | 10 (22) | 4 (15) | |
| Reason for ICU admission, n (%) | |||
| Elective surgery | 33 (72) | 22 (81) | 0.515 |
| Urgent | 13 (28) | 5 (19) | 0.515 |
| Acute Physiology and Chronic Health Evaluation Ⅱ score, median (IQR) | 12.5 (8-18) | 11 (8.5-20) | 0.864 |
| Charlson Comorbidity Index, median (IQR) | 1 (0-2) | 1 (0-2) | 0.233 |
| Duration of mechanical ventilation, median (IQR) | 0.5 (0-1.7) | 0 (0-2) | 0.541 |
| Length of ICU stay, median (IQR) | 2 (2-3) | 2 (2-2.5) | 0.625 |
| Length of hospital stay, median (IQR) | 20 (15-28.8) | 25 (19.5-39) | 0.087 |
| Treatment in ICU (%) | |||
| Mechanical ventilation | 23 (50) | 10 (37) | 0.406 |
| Opioid | 5 (11) | 4 (15) | 0.9 |
| Vasopressor | 3 (7) | 4 (15) | 0.453 |
| Corticosteroid | 8 (17) | 3 (11) | 0.352 |
| Sedation | 4 (9) | 3 (11) | 1 |
| Intra-aortic balloon pumping | 1 (1) | 1 (4) | 1 |
| Continuous renal replacement therapy | 2 (4) | 0 (0) | 0.722 |
| Tracheostomy | 1 (1) | 1 (4) | 1 |
| Operation | 43 (46) | 24 (89) | 0.804 |
| Presence of cancer | 17(37) | 14 (52) | 0.318 |
| Presence of mental illness | 2 (4) | 0 (0) | 0.722 |
| Household composition, n (%) | |||
| Living alone | 7 (15) | 7 (26) | 0.442 |
| Living with someone else | 38 (83) | 20 (74) | 0.442 |
| Caregiver, n (%) | 40 (87) | 21 (78) | 0.352 |
| Social resource, n (%) | 3 (7) | 4 (15) | 0.472 |
| Employment, n (%) | 8 (17) | 8 (30) | 0.38 |
| Outcome, n (%) | |||
| Discharged from home | 38 (83) | 24 (89) | 0.7 |
| Hospital transfer | 8 (17) | 3 (11) | 0.7 |