Characteristic | Full Cohort (n = 309) †| Excluded (n = 199) †| One Month Analysis Sample (n = 110) ‡ | P-value††|
---|---|---|---|---|
 | Mean (SD) or n (%) | Mean (SD) or n (%) | Mean (SD) or n (%) |  |
Age in years | 74.7 (8.5) | 75.9 (8.3) | 72.5 (8.3) | 0.001 |
Male | 145 (47) | 96 (48) | 49 (45) | 0.53 |
Education in years | 12.5 (2.8) | 12.4 (2.9) | 12.5 (2.6) | 0.75 |
Non-white race | 51 (16) | 35 (18) | 16 (14) | 0.49 |
APACHE II score | 23.5 (6.4) | 24.6 (6.3) | 21.4 (6.1) | <0.0001 |
Charlson Co-Morbidity Index | 1.8 (1.9) | 1.9 (2.0) | 1.7 (1.6) | 0.99 |
Admitted from home* | 241 (78) | 143 (72) | 98 (89) | 0.0005 |
Baseline Medical Status | Â | Â | Â | Â |
Evidence of depression** | 85 (28) | 63 (32) | 22 (20) | 0.03 |
Dementia | 95 (31) | 75 (38) | 20 (18) | 0.0004 |
Any Impairment in Activities of Daily Living | 115 (37) | 94 (47) | 21 (19) | <0.0001 |
   Bathing impairment | 104 (34) | 88 (44) | 16 (14) | <0.0001 |
   Grooming impairment | 42 (14) | 37 (19) | 5 (5) | 0.0005 |
   Transfer bed to chair impairment | 54 (17) | 48 (24) | 6 (5) | <0.0001 |
   Walk across room impairment | 56 (18) | 49 (25) | 7 (7) | <0.0001 |
   Ability to dress impairment | 44 (14) | 34 (17) | 10 (9) | 0.05 |
   Ability to eat impairment | 10 (3) | 10 (5) | 0 (0) | 0.02 |
   Ability to toilet impairment | 41 (13) | 38 (19) | 3 (3) | <0.0001 |
Admitting Diagnosis | Â | Â | Â | Â |
   Sepsis | 51 (16) | 39 (20) | 12 (11) | 0.049 |
   Respiratory | 156 (51) | 104 (52) | 52 (47) | 0.40 |
   Neurologic | 5 (2) | 5 (3) | 0 (0) | 0.16 |
   Gastrointestinal hemorrhage | 52 (17) | 24 (12) | 28 (25) | 0.003 |
   Other | 45 (15) | 27 (14) | 18 (16) | 0.50 |
ICU Factors | Â | Â | Â | Â |
Delirium during ICU Stay*** | 239 (79) | 177 (92) | 61 (55) | <0.0001 |
Intubated | 167 (54) | 126 (63) | 41 (37) | <0.0001 |
Days of ventilation, Median (IQR)**** | 6 (8) | 6 (10) | 4 (3) | 0.006 |
Length of stay, Median (IQR)**** | 5 (6) | 6 (9) | 3 (3) | <0.0001 |
Total days of delirium (IQR)**** | 5 (6) | 6 (9) | 1 (3) | <0.0001 |