Table 1.
Comparison of the characteristics of AIS patients according to the onset of SAP.
| Characteristics | Total (N = 295) | Non-SAP (N = 255) | SAP (N = 40) | P value |
|---|---|---|---|---|
| Age, years, mean ± SD | 69.5 ± 12.0 | 68.1 ± 11.7 | 77.5 ± 10.6 | <0.001∗ |
| Male, n (%) | 196 (66.4) | 171 (67.1) | 25 (62.5) | 0.570 |
| Length of hospitalization, days, median (IQR) | 14.0 (11.0, 17.0) | 14.0 (11.0, 16.0) | 14.5 (9.0, 33.0) | 0.241 |
| Baseline NIHSS, median (IQR) | 3 (1, 7) | 3 (1, 5) | 14 (7, 18) | <0.001∗ |
| Dysphagia, n (%) | 49 (16.6) | 15 (5.8) | 34 (85.0) | <0.001∗ |
| Current smoking, n (%) | 96 (32.5) | 85 (33.3) | 11 (27.5) | 0.464 |
| Coronary artery disease, n (%) | 88 (29.8) | 72 (28.2) | 16 (40.0) | 0.131 |
| Hypertension, n (%) | 229 (77.6) | 196 (76.9) | 33 (82.5) | 0.426 |
| Diabetes, n (%) | 106 (35.9) | 96 (37.6) | 10 (25.0) | 0.121 |
| Previous stroke, n (%) | 81 (27.5) | 66 (25.9) | 15 (37.5) | 0.126 |
| Atrial fibrillation, n (%) | 46 (15.6) | 29 (11.4) | 17 (42.5) | <0.001∗ |
| OCSP | ||||
| TACI, n (%) | 15 (5.1) | 5 (2.0) | 10 (25.0) | <0.001∗ |
| PACI, n (%) | 90 (30.5) | 78 (30.6) | 12 (30.0) | 0.940 |
| POCI, n (%) | 39 (13.2) | 30 (11.8) | 9 (22.5) | 0.062 |
| LACI, n (%) | 151 (51.2) | 142 (55.7) | 9 (22.5) | <0.001∗ |
| TC, mmol/L, median (IQR) | 4.2 (3.5, 5.0) | 4.3 (3.6, 5.0) | 4.0 (3.1, 4.9) | 0.086 |
| TG, mmol/L, median (IQR) | 1.2 (0.9, 1.7) | 1.3 (1.0, 1.8) | 0.9 (0.7, 1.3) | <0.001∗ |
| LDL-C, mmol/L, median (IQR) | 2.4 (1.8, 3.0) | 2.4 (1.8, 3.0) | 2.2 (1.8, 2.8) | 0.306 |
| Neutrophils, ×109/L, median (IQR) | 4.3 (3.3, 6.0) | 4.0 (3.1, 5.3) | 7.3 (6.0, 9.6) | <0.001∗ |
| Lymphocytes, ×109/L, median (IQR) | 1.6 (1.3, 2.1) | 1.8 (1.4, 2.1) | 1.1 (0.9, 1.6) | <0.001∗ |
| PLT, ×109/L, median (IQR) | 216.0 (179.0, 253.0) | 216.0 (180.0, 253.0) | 210.5 (152.3, 247.8) | 0.137 |
| PLR, median (IQR) | 126.7 (99.6, 175.3) | 123.2 (98.0, 163.8) | 161.2 (114.1, 209.2) | 0.001∗ |
NIHSS, National Institute of Health Stroke Scale; OCSP, Oxfordshire Community Stroke Project; TACI, total anterior circulation infarct; PACI, partial anterior circulation infarct; POCI, posterior circulation infarct; LACI, lacunar circulation infarct; TC, total cholesterol; TG, triglycerides; LDL-C, low-density lipoprotein cholesterol; PLT, platelet; PLR, platelet-to-lymphocyte ratio; SD, standard deviation; IQR, interquartile range; SAP, stroke-associated pneumonia. ∗P values less than 0.05 were considered statistically significant.