Evidence map›Paper›PMID 28077107›Full record

ArticleBMC pulmonary medicine2017

Recurrent pneumonia among Japanese adults: disease burden and risk factors.

Tomoko Ishifuji, Eiichiro Sando, Norihiro Kaneko, Motoi Suzuki, Paul E Kilgore, Koya Ariyoshi, Konosuke Morimoto, Naoto Hosokawa, Makito Yaegashi, Masahiro Aoshima and 1 more

Open access · goldAbstract read
In one paragraph

Article in BMC pulmonary medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 pooled it
1.9field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 3 syntheses or guidelines pooled it, 32 citations in OpenAlex.

  1. Factors driving outcome variability in aspiration and community-acquired pneumonia: a meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 3 institutions in 2 countries.

Tomoko IshifujiDepartment of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Sakamoto 1-12-4, Nagasaki, 852-8523, Japan.
Eiichiro SandoDepartment of Clinical Tropical Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
Norihiro KanekoDepartment of Pulmonology, Kameda Medical Center, Kamogawa, Chiba, Japan.
Motoi SuzukiDepartment of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Sakamoto 1-12-4, Nagasaki, 852-8523, Japan.
Paul E KilgoreDepartment of Family Medicine and Public Health Sciences, School of Medicine, Wayne State University, Michigan, USA.
Koya AriyoshiDepartment of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Sakamoto 1-12-4, Nagasaki, 852-8523, Japan.
Konosuke MorimotoDepartment of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Sakamoto 1-12-4, Nagasaki, 852-8523, Japan. komorimo@nagasaki-u.ac.jp.ORCID 0000-0003-2912-9919
Naoto HosokawaDepartment of Infectious Diseases, Kameda Medical Center, Kamogawa, Japan.
Makito YaegashiDepartment of General Internal Medicine, Kameda Medical Center, Kamogawa, Chiba, Japan.
Masahiro AoshimaDepartment of Pulmonology, Kameda Medical Center, Kamogawa, Chiba, Japan.
Adult Pneumonia Study Group - Japan (APSG-J)
Kameda Medical Center · JPNagasaki University · JPWayne State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn Japan and other societies with rapidly aging populations, recurrent pneumonia (RP) is a major clinical problem yet only limited information exists regarding the burden of this disease.

methodsA prospective study of adult pneumonia was conducted to investigate the incidence of RP and potential risk factors. From February 1, 2012 to January 31, 2013, patients aged ≥ 15 years who were diagnosed with pneumonia were prospectively enrolled in a representative community hospital located in central Japan. Patients were followed for one-year to evaluate the recurrence of pneumonia and characteristics associated with RP. Cox proportional hazards models were constructed to compute adjusted hazard ratios (aHR) and ascertain risk factors significantly associated with RP.

resultsIn total, 841 patients with a median age of 73 years (range 15-101 years) were enrolled totaling 1,048 person-years of observation with a median follow-up time of 475 days. A total of 137 patients had at least one recurrent episode with an incidence rate of 13.1 per 100 person-years (95% confidence interval: 11.1-15.5). In multivariate analysis, a past history of pneumonia (aHR 1.95, 95% CI: 1.35-2.8), chronic pulmonary disease (aHR 1.86, 1.24-2.78) and inhaled corticosteroid usage (aHR 1.78, 1.12-2.84) and hypnotic/sedative medication usage (aHR 2.06, 1.28-3.31) were identified as independent risk factors for recurrent pneumonia, whereas angiotensin converting enzyme-inhibitors usage was associated with a reduction of the risk of RP (aHR 0.22, 0.05-0.91). The detection of P. aeruginosa was significantly associated with RP even after adjusting for chronic pulmonary diseases (aHR = 2.37).

conclusionsRecurrent pneumonia constitutes a considerable proportion of the pneumonia burden in Japan. A past history of pneumonia, chronic pulmonary disease, inhaled corticosteroid and hypnotic/sedative medication usage and detection of P. aeruginosa were identified as independent risk factors for recurrent pneumonia and special attention regarding the use of medications in this vulnerable population is needed to reduce the impact of this disease in aging populations.

Indexed as

AdolescentAdrenal Cortex HormonesAdultAgedAged, 80 and overCommunity-Acquired InfectionsComorbidityCost of IllnessFemaleHumansHypnotics and SedativesIncidenceJapanMaleMiddle AgedMultivariate AnalysisAdrenal Cortex HormonesHypnotics and SedativesCommunity-acquired pneumoniaElderlyEpidemiologyRecurrent pneumonia

Identifiers

PMID28077107
PMCPMC5225545
OpenAlexW2569577996

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.