TABLE 1.

Prevalence of Bacteremia in Patients With Blood Culture Obtained

	N	Percent Bacteremia (95% Confidence Interval)	P
All patients	369	7.1 (4.4–9.7)
Age (yr)
<1	63	4.9 (1.2–14.6)	0.66
1–5	195	8.2 (4.3–12.1)
>5–12	92	4.4 (0.1–8.5)
>12	19	5.3 (0.0–15.3)
Initial chest radiograph
No radiograph	2	0.0 (0.0–0.0)
No infiltrate	60	11.7 (3.5–19.8)	0.13
Infiltrate present	307	6.2 (3.4–8.9)
Pneumonia complications
Uncomplicated	325	5.9 (3.3–8.4)	<0.01
Complicated*	40	10.0 (0.7–19.3)
Metastatic complication†	4	75.0 (32.5–100.0)
Pleural drainage procedure
No	336	5.7 (3.1–8.1)	<0.01
Yes	33	21.2 (8.9–38.9)
Pleural fluid culture‡
Negative	24	16.7 (1.7–31.6)	0.30
Positive	9	33.3 (2.5–64.1)

^*Patients with complicated pneumonia at presentation including those with or without extrapulmonary complications: systemic inflammatory response syndrome, cardiovascular dysfunction, neurologic dysfunction, hematologic dysfunction, renal dysfunction and hepatic dysfunction.

^†Metastatic complications included pyomyositis, septic arthritis, osteomyelitis and abscess with or without complicated pneumonia.

^‡Pathogens include S. pneumoniae, Staphylococcus aureus and methicillin-resistant Staphylococcus aureus.