Table 2 Comparison of the variables including outcome, demographics, and laboratory findings between train and validation cohorts
From: Prediction of unplanned 30-day readmission for ICU patients with heart failure
Characteristics | Train cohort (N = 2422) | Validation cohort (N = 434) | P |
|---|---|---|---|
Outcome variable N, (%) | |||
Readmission | 581 (23.9) | 102 (23.5) | 0.270 |
Demographics | |||
Age mean (std) | 69.9 (14.3) | 70.4 (13.9) | 0.228 |
Female (%) | 47.6 | 46.3 | 1.00 |
Race N (%) | 0.270 | ||
African American | 291 (12.0) | 51 (11.8) | Â |
Hispanic | 76 (3.10) | 18 (4.15) | |
Others, non-Hispanic | 170 (7.00) | 37 (8.53) | |
White | 1835 (75.8) | 325 (74.9) | |
Asian | 50 (2.10) | 3 (0.691) | |
Laboratory findings mean (std) | |||
Sodium | 138.6 (4.58) | 138.5 (4.80) | 0.835 |
Urea nitrogen | 34.4 (24.0) | 32.6 (22.3) | 0.017 |
NT proBNP | 0.187 (0.380) | 0.181 (0.385) | 0.613 |
Serum creatinine | 0.002 (0.04955) | 0.004 (0.062) | 0.083 |