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ORIGINAL RESEARCH

A Retrospective Study of Pneumococcal Pneumonia in Hospitalized Patients Aged ≥65 Years in Izumo, Japan: 2010 to 2014

ORCID Icon, ORCID Icon, , , , , ORCID Icon, , , & show all
Pages 2125-2132 | Received 27 Feb 2023, Accepted 26 May 2023, Published online: 30 May 2023

Figures & data

Table 1 Patient Background

Table 2 Patients Comorbidities

Figure 1 Types of pneumonia.

Notes: There was no significant difference in pneumonia severity grades (p = 0.427, chi-square test) between the early and late phases.
Abbreviations: CAP, community-acquired pneumonia; HAP, hospital-acquired pneumonia; NHCAP, nursing and healthcare-associated pneumonia.
Figure 1 Types of pneumonia.

Figure 2 Pneumonia severity.

Notes: Pneumonia of moderate severity was most common in both early and late phases, with moderate and severe cases accounting for nearly 90% of the total (early phase, 86.8%; late phase, 88.3%). Patients with extremely severe pneumonia comprised 9.8% of cases in the early phase and 9.3% in the late phase.
Figure 2 Pneumonia severity.

Figure 3 Causative bacteria.

Notes: Streptococcus pneumoniae was the most common cause in both phases, accounting for 12.2% of cases in the early phase and 9.7% in the late phase.
Figure 3 Causative bacteria.

Table 3 Characteristics of Hospitalized Pneumonia Patients