Table 1.
Baseline and Hospital Stay Characteristics, Patients with Clinical Assessments
| Patient Characteristic | All Patients (n=510) |
|---|---|
| Age at enrollment, mean ± SD* | 56 (±15) |
| Age group at enrollment, N (%) | |
| < 65 | 350 (69) |
| ≥ 65 | 160 (31) |
| Sex, N (%) | |
| Female | 246 (48) |
| Male | 264 (52) |
| Race, N (%) | |
| White | 448 (88) |
| Non-white | 62 (12) |
| ICU† type, N (%) | |
| Medical | 307 (60) |
| Surgical | 203 (40) |
| APACHE‡ II at enrollment, mean ± SD | 27 (± 9) |
| Charlson comorbidity index39 at enrollment, median (IQR§) | 2.0 (1.0 to 4.0) |
| Mechanical ventilation, N (%) | |
| Never on ventilator | 45 (9) |
| Spent some time on ventilator | 465 (91) |
| History of depression, N (%) | 170 (33%) |
| Preexisting cognitive impairment, N (%) | |
| No cognitive impairment (IQCODE||40 ≤ 3.3) | 447 (88) |
| Some cognitive impairment (IQCODE||40 > 3.3) | 63 (12) |
*
SD – standard deviation,
†
ICU - intensive care unit,
‡
APACHE II - Acute Physiology and Chronic Health Evaluation II,
§
IQR – Interquartile Range,
|
IQCODE - Informant Questionnaire on Cognitive Decline in the Elderly