Table 1.
Baseline characteristics of study patients aged < 60 years.
| Variables | Overall (n = 4130) | BMI categories (kg/m2) | p-value* | |||
|---|---|---|---|---|---|---|
| < 18.5 (n = 25) | 18.5–29.9 (n = 1780) | 30.0–39.9 (n = 1882) | ≥ 40.0 (n = 443) | |||
| Age (years) | 47.0 (14.0) | 34.0 (25.0) | 48.0 (14.0) | 47.0 (14.0) | 42.0 (14.0) | < 0.001 |
| Sex | < 0.001 | |||||
| Men | 2670 (64.7) | 12 (0.5) | 1163 (43.6) | 1240 (46.4) | 255 (9.6) | |
| Women | 1460 (35.3) | 13 (0.9) | 617 (42.3) | 642 (44.0) | 188 (12.9) | |
| Hypertensionª | 1584 (55.0) | 6 (0.4) | 583 (36.8) | 756 (47.7) | 239 (15.1) | 0.12 |
| Diabetes mellitusª | 904 (31.4) | 5 (0.6) | 351 (38.8) | 421 (46.6) | 127 (14.1) | 0.25 |
| Smokingª | 114 (4.0) | 0 (0.0) | 52 (45.6) | 49 (43.0) | 13 (11.4) | 0.16 |
| Chronic kidney diseaseª | 140 (4.9) | 3 (2.1) | 83 (59.3) | 46 (32.9) | 8 (5.7) | < 0.001 |
| Myocardial infarctionª | 54 (1.9) | 0 (0.0) | 23 (42.6) | 26 (48.2) | 5 (9.3) | 0.57 |
| Previous strokeª | 40 (1.4) | 0 (0.0) | 25 (62.5) | 13 (32.5) | 2 (5.0) | 0.005 |
| Dementiaª | 12 (0.4) | 0 (0.0) | 7 (58.3) | 4 (33.3) | 1 (8.3) | 0.37 |
| Atrial fibrillationª | 15 (0.5) | 0 (0.0) | 5 (33.3) | 8 (53.3) | 2 (13.3) | 1.00 |
| Hospital mortality§ | 747 (18.7) | 6 (0.8) | 281 (37.6) | 342 (45.8) | 118 (15.8) | < 0.001 |
| ICU length of stay¥ | 7.4 (10.4) | 4.4 (6.0) | 6.6 (9.6) | 7.7 (10.5) | 10.2 (12.8) | < 0.001 |
For the variables age and ICU length of stay, data are median (IQR).
*Kruskal–Wallis test for continuous and Chi-squared and Fisher’s exact test for categorical variables.
§The variable hospital mortality presented 141 missing data.
¥The variable ICU length of stay presented 60 missing data.
ªThe variables hypertension, diabetes mellitus, smoking, chronic kidney disease, previous myocardial infarction, previous stroke, dementia, and atrial fibrillation have 1249 missing data.