Table 7 Comparisons of Nonnosocomial Infection Cases in the Research Group and Their Matched Controls

Hospital stay (day), median

8.0 (3–15)

9.0 (3–12)

0.069

Fever days before admission, median

7 (0–46)

9 (3–21)

0.449

Fever duration (day), median

9 (2–29)

12 (7–26)

0.028

Max temperature (°C), median

39.5 (37.8–41.0)

39.8 (38.0–40.5)

0.255

Heart rate (bpm), mean

112 ± 13 (80–142)

117 ± 14 (88–148)

0.134

Respiratory rate (bpm), median

25 (18–44)

25 (21–56)

–

Disturbance of consciousness, n

0

1 (4.8%)

0.25

Cyanosis, n

1 (1.6%)

0

0.75

Dyspnea, n

1 (1.6%)

4 (19%)

0.013

Abnormal breath sounds, n

39 (61.9%)

14 (66.7%)

0.797

Leukocyte count (× 10^9/L), median

7.49 (2.9–20.42)

5.95 (3.78–13.88)

0.614

Anemia, n

11 (17.5%)

6 (28.6%)

0.213

Platelet (× 10^9/L), mean

323 ± 117 (90–622)

238 ± 70 (111–342)

< 0.001

C-reactive protein> 8 mg/L, n

34 (54.0%)

12 (57.1%)

0.502

Elevated serum CK-MB, n

2 (3.2%)

2 (9.5%)

0.264

Multilobar infiltrates, n

42 (66.7%)

13 (61.9%)

0.442

Pleural effusion, n

17.0 (27%)

7 (33.3%)

0.383

Rash, n

4 (4.3%)

0

0.309

Myocardial damage, n

22 (34.9%)

6 (28.6%)

0.4

Liver damage, n

9 (14.3%)

1 (4.8%)

0.226

Fiberoptic bronchoscopy

39 (61.9%)

9 (42.9%)

0.102

Oxygen therapy

38 (60.3%)

19 (90.5%)

0.008

NCPAP

0

2 (9.5%)

0.06

Readmission

6 (9.5%)

2 (9.5%)

0.683

Severe CAP

49 (77.8%)

17 (81.0%)

0.512

Extremely severe pneumonia

3 (4.8%)

4 (19%)

0.062

Severe disease defined by clinical score system

8 (12.7%)

9 (42.9%)

0.005