Table 2. Clinical characteristics of patients with APE and without APE in the training and testing groups.
| Clinical data | APE (n=86) | Non-APE (n=92) | χ2/t/U test | P |
|---|---|---|---|---|
| Male/female | 37/49 | 40/52 | χ2=0.004 | 0.536 |
| Age (years) | 63.4±16.8 | 46.5±16.7 | t=0.426 | 0.67 |
| BMI (kg/m2) | 25.2±4.0 | 25.8±5.1 | t=0.639 | 0.524 |
| Temperature (℃) | 36.8±0.6 | 36.7±0.6 | t=0.049 | 0.961 |
| HR (bpm) | 88.6±18.4 | 84.1±17.3 | t=1.446 | 0.15 |
| RR (times/min) | 21.3±4.2 | 20.3±2.8 | t=1.518 | 0.131 |
| SP (mmHg) | 126.0±19.4 | 127.8±28.2 | t=0.435 | 0.664 |
| DP (mmHg) | 75.3±13.2 | 76.6±14.3 | t=0.561 | 0.575 |
| Chest pain | 59 (68.6) | 51 (55.4) | χ2=3.266 | 0.071 |
| Dyspnea | 11 (12.8) | 14 (15.2) | χ2=0.271 | 0.641 |
| Hemoptysis | 24 (27.9) | 19 (20.7) | χ2=1.277 | 0.258 |
| Fever | 8 (9.3) | 3 (3.3) | χ2=2.798 | 0.094 |
| Syncope | 7 (8.1) | 6 (6.5) | χ2=0.172 | 0.678 |
| WBC (×109/L) | 9.6±4.3 | 8.5±4.2 | t=1.773 | 0.078 |
| Percentage of neutrophils (%) | 73.6±10.2 | 72.1±11.9 | t=0.874 | 0.383 |
| Percentage of lymphocytes (%) | 18.1±9.1 | 19.5±10.3 | t=0.945 | 0.346 |
| Hemoglobin (g/L) | 126.7±24.3 | 125.8±22.4 | t=0.260 | 0.795 |
| CRP (mg/L) | 27.0 (5.7–52.9) | 14.2 (3.1–41.7) | U=2,422.5 | 0.086 |
| D-Dimer (mg/L) | 4.8 (2.0–10.7) | 1.2 (0.7–2.7) | U=1,605.5 | <0.001 |
| NT-proBNP (pg/mL) | 390.5 (72.5–1,523.0) | 322.0 (92.0–1,568.0) | U=3,213.2 | 0.931 |
Data are presented as the mean ± standard deviation, median (interquartile range), or number (%). APE, acute pulmonary thromboembolism; BMI, body mass index; HR, heart rate; RR, respiratory rate; SP, systolic pressure; DP, diastolic pressure; WBC, white blood cell; CRP, C-reactive protein; NT-proBNP, N-terminal prohormone of brain natriuretic peptide.