Table 3.

Comparing associated characteristics of multiple-serotype pneumococcal pneumonia with single-serotype pneumococcal pneumonia

Characteristics	Unadjusted OR (95% CI)	Adjusted OR* (95% CI)
Age group, years
≥65	Reference	Reference
<65	1.83 (1.23 to 2.73)	2.06 (0.87 to 4.92)
PPSV23 vaccinated within 5 years
Not-vaccinated	Reference	Reference
Vaccinated	0.49 (0.29 to 0.83)	0.51 (0.27 to 0.94)
Pneumonia type
HCAP	Reference	Reference
CAP	2.00 (1.25 to 3.21)	1.60 (0.82 to 3.12)

*ORs were adjusted for patient’s sex, age, age group, vaccination status, present smoking, underlying diseases, prehospital antibiotic use, study site, study period, type of pneumonia, hypoxaemia and severity score (CURB-65).

CAP, community-acquired pneumonia; CURB-65, Confusion, blood Urea nitrogen, Respiratory rate, Blood pressure, 65 years of age and older; HCAP, healthcare-acquired pneumonia; PPSV23, 23-valent pneumococcal polysaccharide vaccine.