Table 1.
The basic characteristics of study subjects
| Variable | Unplanned Readmission n = 15 n (%) |
Non-unplanned readmission n = 63 n (%) |
p-value | |
|---|---|---|---|---|
| Sex | male | 5 (33.3) | 28 (44.4) | 0.434 |
| female | 10 (66.7) | 35 (55.6) | ||
| Age (years) | 80 (72, 90)* | 81 (73, 86) | 0.929 | |
| Length of hospitalization (days) | 10 (6, 16) | 9 (7, 13) | 0.541 | |
| Hypertension | 9 (60) | 41 (65) | 0.713 | |
| Diabetes | 7 (47) | 19 (30) | 0.223 | |
| Diagnosis at index admission | ||||
| pneumonia | 9 (60) | 25 (40) | 0.154 | |
| urinary tract infection | 8 (53) | 44 (70) | 0.223 | |
| electrolyte imbalance | 3 (20) | 9 (14) | 0.582 | |
| gastro-intestinal tract bleeding | 1 (7) | 2 (3) | 0.527 | |
| cerebral vascular accident | 2 (13) | 8 (13) | 0.947 | |
| Activity level | 0.288 | |||
| can walk in hospital room | 1 (7) | 3 (5) | ||
| on bed and can change position | 0 | 9 (14) | ||
| bedridden | 14 (93) | 50 (79) | ||
| Glasgow Coma Scale | 12 (7, 14) | 10 (8, 14) | 0.880 | |
| WBC before discharge (×103/μl) | 8.8 (6.7, 10.0) | 6.8 (5.6, 8.5) | 0.027 | |
| Blood urea nitrogen (mg/dL) | 25 (13, 32) | 16.5 (13.0, 29.0) | 0.584 | |
| Blood glucose (mg/dL) | 142 (110, 239) | 128 (105, 164) | 0.302 | |
| Serum GOT (mg/dL) | 20 (14, 23) | 22 (16, 32) | 0.212 | |
WBC = white blood cell; GOT = glutamic oxaloacetic transaminase
* continuous variables were expressed as median (first quartile, third quartile)