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Table 1 Comparison of characteristics of patients with pneumonia (n = 239) and patients without pneumonia (n = 216) admitted for respiratory symptoms

From: The association of serum procalcitonin and high-sensitivity C-reactive protein with pneumonia in elderly multimorbid patients with respiratory symptoms: retrospective cohort study

  Patients with pneumonia (n = 239) Patients without pneumonia (n = 216) p value, age and sex-adjusted
Age, mean ± standard deviation (years) 80 ± 14 82 ± 10 0.22
Men, number (%) 138 (58) 89 (41) 0.006
CIRS Comorbidity Score, median [IQR] 14 [10–17] 14 [10–18] 0.51
Number of comorbidities, mean ± standard deviation 3.9 ± 1.5 4.0 ± 1.3 0.75
Nursing home residents, number (%) 46 (19) 24 (11) 0.004
Ward length of stay, mean ± standard deviation (days) 4.9 ± 3.1 3.8 ± 2.1 <0.001
Inhospital death, number (%) 19 (8) 16 (7) 0.96
hs-CRP, median [IQR] (mg/L, normal range 0–5) 116.0 [46.5–179.0] 22.5 [6.9–84.4] <0.001
Procalcitonin, median [IQR] (ng/ml, normal range 0–0.50) 0.22 [0.12–0.87] 0.15 [0.10–0.35] 0.08
Dementia, number (%) 100 (42) 54 (25) <0.001
Stroke, number (%) 57 (24) 39 (18) 0.11
Cancer, number (%) 53 (22) 41 (19) 0.56
Liver disease, number (%) 31 (13) 21 (10) 0.53
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