Table 1.
Demographic characteristics of patients with heat illness at admission, stratified by heatstroke diagnosis.
| Characteristics | Total (n = 302) | Heatstroke group (n = 131) | Non-heatstroke group (n = 171) | p value |
|---|---|---|---|---|
| Age (year) | 21 (20, 23) | 22 (20, 24) | 21 (20, 23) | 0.155 |
| Male, n (%)a | 299 (99.0) | 131 (100.0) | 168 (98.2) | 0.261 |
| Core temperature (°C) | 38.3 (37.7, 39.6) | 39.7 (38.0, 40.7) | 38.0 (37.6, 38.7) | < 0.001 |
| Heart Rate (beats/min) | 78 (68, 92) | 87 (75, 103) | 73 (64, 84) | < 0.001 |
| WBC (1 × 109/L) | 9.8 (7.8, 13.6) | 11.4 (8.1, 15.2) | 9.4 (7.5, 12.7) | 0.012 |
| Hemoglobin (g/L)b | 139 ± 17 | 140 ± 20 | 138 ± 15 | 0.449 |
| Platelet count (1 × 109/L) | 192 (154, 224) | 185 (129, 222) | 194 (165, 226) | 0.039 |
| Packed cell volume (%)b | 41.2 ± 5.2 | 41.4 ± 6.2 | 41.0 ± 4.4 | 0.536 |
| ALT (U/L) | 23 (17, 45) | 39 (20, 127) | 20 (16, 30) | < 0.001 |
| AST (U/L) | 29 (20, 50) | 41 (24, 107) | 26 (18, 35) | < 0.001 |
| Total bilirubin (μmol/L) | 12.9 (8.8, 19.7) | 14.6 (10.1, 22.3) | 12.2 (8.5, 18.0) | 0.024 |
| Creatinine (mmol/L) | 80 (65, 101) | 96 (72, 125) | 75 (64, 86) | < 0.001 |
| Creatine kinase (U/L) | 239 (115, 728) | 398 (178, 1191) | 180 (83, 470) | < 0.001 |
| Prothombin time (sec) | 13.1 (12.2, 14.3) | 13.9 (12.8, 17.1) | 12.6 (11.9, 13.5) | < 0.001 |
| INR | 1.1 (1.0, 1.2) | 1.2 (1.1, 1.4) | 1.0 (0.9, 1.1) | < 0.001 |
| APTT (sec) | 30.0 (26.8, 33.7) | 31.2 (26.8, 38.1) | 29.8 (26.8, 32.8) | 0.031 |
| Fibrinogen (g/L) | 2.3 (1.9, 2.7) | 2.4 (2.0, 2.8) | 2.1 (1.6, 2.6) | 0.001 |
| D-dimer (μg/mL) | 0.3 (0.2, 1.1) | 0.7 (0.3, 2.7) | 0.2 (0.1, 0.5) | < 0.001 |
| In-hospital mortality (%)a | 7 (2.3) | 7 (5.3) | 0 (0) | < 0.001 |
WBC: white blood cell count; ALT: alanine aminotransferase; AST: aspartate aminotransferase; INR: international normalized ratio; APTT: activated partial thromboplastin time.
a
Value was presented as n (%).
b
Values were presented as mean ± standard deviation; and the remaining data were presented as median (Q1, Q3).