Table 3 Patient characteristics in groups according to the 2-year-period pre-ICU healthcare use: groups A, B and C built after clustering (see text for details), and group D who had no pre-ICU healthcare use reported
Variables | Group A (n = 479) | Group B (n = 75) | Group C (n = 51) | Group D (n = 251) | p |
|---|---|---|---|---|---|
Percentage of total study population | 54.3 | 8.5 | 5.8 | 28.5 | |
Age, mean ± SD | 61 ± 15 | 63 ± 14 | 62 ± 15 | 61 ± 15 | 0.8 |
Main comorbidities reported (during 2-year pre-ICU period) | |||||
Chronic cardiac disease, n (%) | 82 (17.1) | 23 (30.6) | 21 (41) | NA | < 0.001* |
Chronic respiratory disease, n (%) | 49 (10.2) | 13 (17.3) | 13 (25.4) | NA | 0.003* |
Chronic hepatic disease, n (%) | 22 (4.5) | 14 (6, 14) | 9 (17.6) | NA | < 0.001* |
Chronic renal disease, n (%) | 17 (3.5) | 14 (18.6) | 6 (11.7) | NA | < 0.001* |
SAPSII, mean ± SD | 49 ± 17 | 53 ± 18 | 50 ± 19 | 49 ± 17 | 0.78 |
Duration of mechanical ventilation (days), mean ± SD | 17 ± 15 | 13 ± 10 | 15 ± 14 | 15 ± 11 | 0.10 |
ICU LOS (days), mean ± SD | 27 ± 22 | 21 ± 16 | 26 ± 22 | 26 ± 19 | 0.23 |
Hospital LOS (days), mean ± SD | 53 ± 37 | 52 ± 48 | 59 ± 46 | 47 ± 25 | 0.18 |