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Table 1 Statistical analysis of clinical characteristics between two groups

From: Risk of stroke-associated pneumonia during hospitalization: predictive ability of combined A2DS2 score and hyperglycemia

VariablesNon-SAPSAPχ2ORP value
Elderly age (≥75 years old)396 (16.8%)87 (43.5%)85.4023.803< 0.001
Male sex1635 (69.5%)133 (66.5%)0.7871.1480.375
Atrial fibrillation121 (5.1%)50 (25.0%)116.2396.146< 0.001
Dysphagia389 (16.5%)51 (25.5%)10.3731.7270.001
NIHSS score (≥16 points)*12 (0.5%)33 (16.5%)< 0.001
NIHSS score (5–15 points)*742 (31.5%)114 (57.0%)< 0.001
NIHSS score (0–4 points)*1598 (67.9%)53 (26.5%)< 0.001
Random hyperglycemia257 (10.9%)35 (17.5%)7.8601.7290.005
Fasting hyperglycemia566 (24.1%)95 (47.5%)52.7472.855< 0.001
Random or fasting hyperglycemia619 (26.3%)99 (49.5%)48.9922.744< 0.001
Posterior circulation infarction772 (32.8%)71 (35.5%)0.5971.1260.440
  1. NIHSS, National Institutes of Health Stroke Scale
  2. *NIHSS scores was compared using nonparametric tests
  3. There was no significant difference in gender and infarction site between the SAP group and non-SAP group (P > 0.05). The incidence of SAP in patients with the following factor(s) was significantly higher than that in patients without the following factor(s) (P < 0.05): elderly age (≥75 years old), atrial fibrillation, dysphagia, random hyperglycemia, fasting hyperglycemia, or random or fasting hyperglycemia. Therefore, these factors were considered as potential risk factors for SAP. These patients were classified into three subgroups according to stroke severity (NIHSS score), and there was a statistically significant difference in the incidence of pneumonia among these three subgroups (P < 0.05)