Table 2.
Comparison of those with and without Advance Directives by Demographic and Clinical Characteristics
| Demographic/Clinical Characteristic | Total (n=450) | AD on admission (n=191) | No AD on admission (n=259) | χ2 | p-value |
|---|---|---|---|---|---|
| Age group | |||||
| Young old (65–74) | 198 (44.0%) | 65(34.0%) | 133(51.4%) | 13.76 | .001 |
| Middle old (75–84) | 196 (43.6%) | 96(50.3%) | 100(38.6%) | ||
| Oldest old (85+) | 56 (12.4%) | 30(15.7%) | 26(10.0%) | ||
| Sex | |||||
| Male | 208 (46.2%) | 86(45.0%) | 122(47.1%) | 0.19 | .662 |
| Female | 242 (53.8%) | 105(55.0%) | 137(52.9%) | ||
| Racial Category | |||||
| Caucasian | 400 (88.9%) | 176(92.1%) | 224(86.5%) | 3.57 | .168 |
| African American | 43 (9.6%) | 13(6.8%) | 30(11.6%) | ||
| Other/Unknown | 7 (1.6%) | 2(1.0%) | 5(1.9%) | ||
| ICU Unit Type | |||||
| Cardiovascular | 147 (32.7%) | 51(26.7%) | 96(37.1%) | 13.14 | .004 |
| Medical | 140 (31.1%) | 55(28.8%) | 85(32.8%) | ||
| Trauma | 86 (19.1%) | 50(26.2%) | 36(13.9%) | ||
| Transplant | 77 (17.1%) | 35(18.3%) | 42(16.2%) | ||
| Pre-hospital functional dependence, mean ±SD | |||||
| ADLs (n= 363) ∞ | 18.9±32.8 | 22.6±34.6 | 15.8±31.0 | t= −1.98 | .049 |
| IADLs (n=355) ∞ | 20.2±30.2 | 24.4±33.2 | 16.7±27.2 | t= −2.35 | .019 |
∞
The proportion reported is among patients with non-missing data; we report the number of subjects with non-missing data in parenthesis.