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Table 3 The clinical and laboratory features of 24 patients which was classified in pneumonia, lung abscess and bacterial pleurisy only

From: The clinical features of respiratory infections caused by the Streptococcus anginosus group

  Total Pneumonia Lung abscess Bacterial pleurisy only p-Value
  (n = 24) (n = 16) (n = 5) (n = 3)
Age (y); mean ± SD 72.1 ± 11.6 74.8 ± 9.8 68.0 ± 15.4 65.0 ± 9.8 NS
Gender (male/female) 18/6 11/5 5/0 2/1 NS
BMI; mean ± SD 20.3 ± 4.4 19.6 ± 4.6 25.0 ± 3.5 19.6 ± 2.2 p = 0.032**
Comorbidity diseases 23 (95.8) 16 (100) 4 (80.0) 3 (100) NS
 Neoplastic disease 7 (29.2) 4 (25.0) 2 (40.0) 1 (33.3) NS
 Cerebrovascular disease 9 (37.5) 7 (43.8) 1 (20.0) 1 (33.3) NS
 Chronic pulmonary disease 2 (8.3) 1 (6.3) 1 (20.0) 0 (0.0) NS
 Chronic cardiac disease 4 (16.7) 4 (25.0) 0 (0.0) 0 (0.0) NS
 Chronic liver disease 3 (12.5) 3 (18.8) 0 (0.0) 0 (0.0) NS
 Chronic renal disease 4 (16.7) 2 (12.5) 0 (0.0) 2 (66.7) NS
 Diabetes mellitus 6 (25.0) 4 (25.0) 0 (0.0) 2 (66.7) NS
Smoking history 10 (41.7) 7 (43.8) 3 (60.0) 0 (0.0) NS
Alcohol 6 (25.0) 5 (31.3) 1 (20.0) 0 (0.0) NS
The days from symptom onset to consultation (days) 16.0 ± 19.6 9.0 ± 9.3 38.6 ± 30.8 16.0 ± 14.8 p = 0.031*
Symptoms at presentation
 Fever 19 (79.2) 13 (81.3) 4 (80.0) 2 (66.7) NS
 Cough 12 (50.0) 7 (43.8) 4 (80.0) 1 (33.3) NS
 Sputum 12 (50.0) 7 (43.8) 4 (80.0) 1 (33.3) NS
 Blood sputum 2 (8.3) 0 (0.0) 1 (20.0) 1 (33.3) NS
 Chest pain 12 (50.0) 9 (56.3) 1 (20.0) 2 (66.7) NS
 Disturbance of consciousness 3 (12.5) 3 (18.8) 0 (0.0) 0 (0.0) NS
Previous antibiotic treatment 7 (29.2) 6 (37.5) 0 (0.0) 1 (33.3)  NS
Clinical parameter
 Body temperature (°C) 37.8 ± 0.80 37.9 ± 0.81 37.5 ± 0.97 37.8 ± 0.59 NS
 Systolic blood pressure (mmHg) 120.0 ± 22.2 117.8 ± 22.4 116.4 ± 19.3 135.3 ± 27.2 NS
 Heart rate (beats/min) 100.6 ± 15.1 102.7 ± 16.7 93.6 ± 13.4 101.0 ± 3.6 NS
 Respiratory rate (/min) 23.5 ± 6.1 25.0 ± 5.5 17.3 ± 5.1 27.0 ± 4.2 p = 0.029*
 Hypoxia (SpO2 ≤ 90 %) 15 (62.5) 12 (75.0) 1 (20.0) 2 (66.7) p = 0.047*
Laboratory findings
 White blood cell counts (/μL) 16,763 ± 9412 18,869 ± 9532 10,080 ± 2906 16,667 ± 13,164 p = 0.014*
 C-reactive protein (mg/dL) 18.2 ± 10.5 19.2 ± 11.0 11.7 ± 7.1 24.1 ± 9.6 NS
 Albumin (g/dL) 2.5 ± 0.6 2.5 ± 0.7 2.7 ± 0.7 2.2 ± 0.4 NS
Pleural effusion 19 (79.2) 14 (87.5) 2 (40.0) 3 (100) NS
 Complicated pleural effusion 9 (37.5) 6 (37.5) 1 (20.0) 2 (66.7) NS
 Empyema 9 (37.5) 8 (50.0)  0 (0.0) 1 (33.3) NS
Cultured bacteria
S. intermedius 14 (58.3) 11 (68.8) 3 (60.0) 0 (0.0) NS
S. constellatus 8 (33.3) 4 (25.0) 2 (40.0) 2 (66.7) NS
S. anginosus 2 (8.3) 1 (6.3)  0 (0.0) 1 (33.3) NS
Pneumonia severity index 125.2 ± 37.3 128.1 ± 37.8 123.6 ± 48.6 112.0 ± 16.5 NS
  1. SD standard deviation, BMI body mass index, SpO 2 pulse oximetric saturation, NS not significant
  2. *Statistically significant difference in the comparison between pneumonia and lung abscess; **Statistically significant difference in the comparison between pneumonia and bacterial pleurisy