Table 3 Characteristics of the highest risk groups (top 10%), according to each model separately (PREADM-H vs. PREADM)
From: Identifying patients at highest-risk: the best timing to apply a readmission predictive model
Characteristics | Total | PREADM-H high risk; PREADM non high risk | PREADM-H non high risk; PREADM high risk | P value |
|---|---|---|---|---|
N = 1057 | n = 229 | n = 218 | ||
Age, y, mean (SD) | 78.9 (7.8) | 79.2 (7.6) | 80.0 (8.3) | 0.272 |
Male, n (%) | 529 (50.0%) | 112 (48.9%) | 129 (59.2%) | 0.037 |
Socioeconomic status, n (%) | ||||
Low | 306 (29.3%) | 56 (24.8%) | 46 (21.3%) | |
Medium | 446 (42.6%) | 95 (42.0%) | 104 (48.1%) | |
High | 294 (28.1%) | 75 (33.2%) | 66 (30.6%) | 0.420 |
Ethnicity, n (%) | ||||
Jewish | 861 (81.5%) | 205 (89.5%) | 200 (91.7%) | |
Arab | 196 (18.5%) | 24 (10.5%) | 28 (12.8%) | 0.518 |
Before index admission | ||||
CHF, n (%) | 649 (61.4%) | 113 (49.3%) | 128 (58.7%) | 0.059 |
COPD, n (%) | 458 (43.3%) | 74 (32.3%) | 88 (40.4%) | 0.095 |
CRF, n (%) | 645 (61.0%) | 116 (50.7%) | 142 (65.1%) | 0.003 |
Malignancy, n (%) | 438 (41.4%) | 89 (38.9%) | 85 (39.0%) | 1.000 |
Arrhythmia, n (%) | 620 (58.7%) | 129 (56.3%) | 130 (59.6%) | 0.541 |
Disability, n (%) | 752 (71.1%) | 127 (55.5%) | 156 (71.6%) | 0.001 |
Oncology (treatment phase), n (%) | 290 (27.4%) | 72 (31.4%) | 28 (12.8%) | < 0.001 |
Body mass index, mean (SD) | 27.1 (6.2) | 27.8 (7.1) | 27.1 (5.1) | 0.187 |
No. hospital admissions in the past year, mean (SD) | 5.7 (3.3) | 3.4 (1.7) | 3.9 (1.8) | 0.003 |
No. primary care and specialist visits in the past year, mean (SD) | 20.9 (16.2) | 18.6 (14.6) | 16.9 (14.2) | 0.213 |
No. days from last hospitalization, mean (SD) | 39.3 (39.4) | 54.0 (55.0) | 39.2 (33.4) | 0.001 |
Residing in hospitals’ catchment area, n (%) | 1–190 (0.1–18%) | 1–48 (0.4–21%) | 0–45 (0–21%) | 0.696 |
During index admission | ||||
Index admission LOS > =5 days | 622 (58.8%) | 200 (87.3%) | 34 (15.6%) | < 0.001 |
Procedure, n (%) | 26 (2.5%) | 8 (3.5%) | 15 (6.9%) | 0.160 |
Index admission type: urgent, n (%) | 1054 (99.7%) | 229 (100.0%) | 195 (89.4%) | < 0.001 |
Hemoglobin level (last) < 12 g/dL, n (%) | 933 (88.3%) | 226 (98.7%) | 107 (49.1%) | < 0.001 |
Sodium level (last) < 135 mEq/L, n (%) | 304 (28.8%) | 112 (48.9%) | 10 (4.6%) | < 0.001 |