Table 4. Risk factors for SAP by univariate logistic regression.
| Characteristics | N | Pneumonia | OR(95%CI) | P Value |
| Age, y | ||||
| <75 | 977 | 16.3% | 1.0(reference) | |
| 75+ | 165 | 33.9% | 2.64(1.84–3.81) | 0.001* |
| Male sex | 723 | 18.7% | 0.97(0.72–1.32) | 0.861 |
| Dysphagia | 217 | 67.3% | 25.51(17.53–37.12) | 0.001* |
| Comorbidities | ||||
| Atrial fibrillation | 51 | 49.0% | 4.56(2.58–8.07) | 0.001* |
| Hypertesion | 673 | 18.9% | 1.01(0.75–1.36) | 0.964 |
| Diabetes mellitus | 343 | 23.9% | 1.57(1.15–2.15) | 0.004* |
| Previous stroke | 299 | 24.7% | 1.64(1.19–2.25) | 0.002* |
| Previous TIA | 53 | 28.3% | 1.76(0.95–3.25) | 0.071* |
| Dyslipidemia | 94 | 14.9% | 0.74(0.41–1.33) | 0.309 |
| Coronary heart disease | 115 | 19.1% | 1.02(0.63–1.67) | 0.930 |
| Excess alcohol consumption | 270 | 16.7% | 0.83(0.58–1.19) | 0.299 |
| Current smoking | 336 | 17.3 | 0.86(0.62–1.20) | 0.382 |
| NIHSS on admission | ||||
| 0–4 | 654 | 7.8% | 1.0(reference) | |
| 5–15 | 420 | 27.4% | 4.46(3.12–6.37) | 0.001* |
| 16+ | 68 | 72.1% | 30.49(16.70–55.67) | 0.001* |
| OCSP subtype | ||||
| LACI | 222 | 12.2% | 1.0(reference) | |
| PACI | 403 | 19.4% | 1.73(1.08–2.78) | 0.021* |
| TACI | 40 | 37.5% | 4.33(2.03–9.23) | 0.001* |
| POCI | 256 | 23.0% | 2.16(1.32–3.55) | 0.002* |
| Length of stay | 921 | 20.4% | 1.10(1.08–1.12) | 0.001* |
OR, Odds Ratio; CI, Confidence Interval; TIA, Transient Ischemic Attack; NIHSS, National Institutes of Health Stroke Scale score; OCSP, Oxfordshire Community Stroke Project; LACI, Lacunar infarction; PACI, Partial anterior circulation infarct; TACI, Total anterior circulation infarct; POCI, Posterior circulation infarct.