Table 1 Demographics of ICU patients (N = 7717)
Variable | Total | PU group (N = 590) | Non-PU group (N = 7127) | Statistic | p value | |
|---|---|---|---|---|---|---|
Gender, freq (%) | Male | 4426 | 378 (64.1%) | 4048 (56.8%) | \( {x}^2=1.9 \) | <.001 |
| Â | Female | 3291 | 212 (35.9%) | 3079 (43.2%) | Â | Â |
Race/Ethnicity, freq (%) | White | 6345 | 469 (79.5%) | 5876 (82.4%) | \( {x}^2=3.15 \) | .076 |
| Â | Non-white | 1372 | 121 (20.5%) | 1251 (17.6%) | Â | Â |
Age (years), mean (SD) | 57.7 (15.9) | 59.0 (15.5) | 57.6 (16) | t = 4.52 | .034 | |
Length of ICU stay (days), mean (SD) | 10.1 (10) | 13.4 (14.3) | 9.8 (9.6) | t = 70.56 | <.001 | |