Evidence map›Paper›PMID 23042978›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2013

Environmental risk factors for Pneumocystis pneumonia hospitalizations in HIV patients.

Kpandja Djawe, Linda Levin, Alexandra Swartzman, Serena Fong, Brenna Roth, Anuradha Subramanian, Katherine Grieco, Leah Jarlsberg, Robert F Miller, Laurence Huang and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

18 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. JHLT open · 2025
    Article
  4. Air pollution and respiratory infections: the past, present, and future.Toxicological sciences : an official journal of the Society of Toxicology · 2023
    Review
  5. COPD in People with HIV: Epidemiology, Pathogenesis, Management, and Prevention Strategies.International journal of chronic obstructive pulmonary disease · 2023
    Review
  6. No Change ofJournal of fungi (Basel, Switzerland) · 2021
    Article
  7. Transmission and Colonization ofJournal of fungi (Basel, Switzerland) · 2021
    Review
  8. Chronic obstructive pulmonary disease in HIV.Expert review of respiratory medicine · 2021
    Review
  9. Article
  10. Article
  11. The Relationship betweenOBM genetics · 2018
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 6 institutions in 2 countries.

Kpandja DjaweVeterans Affairs Medical Center, Cincinnati, OH 45267-0560, USA.
Linda Levin
Alexandra Swartzman
Serena Fong
Brenna Roth
Anuradha Subramanian
Katherine Grieco
Leah Jarlsberg
Robert F Miller
Laurence Huang
Peter D Walzer
University of California, San Francisco · USPulmonary and Critical Care Associates · USSan Francisco General Hospital · USVeterans Health Administration · USLondon School of Hygiene & Tropical Medicine · GBUniversity of Cincinnati · US

Funding

International HIV-associated Opportunistic Pneumonias (IHOP) StudyR01HL090335 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HUANG, LAURENCE · 2007 to 2011
$4.0M
Patient-Oriented Research and Mentoring in PneumocystisK24HL087713 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HUANG, LAURENCE · 2006 to 2018
$1.8M
NHLBI NIH HHS K24 HL087713NHLBI NIH HHS R01 HL090335
6 · The paper itself

Abstract

backgroundPneumocystis pneumonia (PcP) is the second leading cause of morbidity and mortality in human immunodeficiency virus (HIV)-infected patients in the United States. Although the host risk factors for the development of PcP are well established, the environmental (climatological, air pollution) risk factors are poorly understood. The major goal of this study was to determine the environmental risk factors for admissions of HIV-positive patients with PcP to a single medical center.

methodsBetween 1997 and 2008, 457 HIV-positive patients with microscopically confirmed PcP were admitted to the San Francisco General Hospital. A case-crossover design was applied to identify environmental risk factors for PcP hospitalizations. Climatological and air pollution data were collected from the Environmental Protection Agency and Weather Warehouse databases. Conditional logistic regression was used to evaluate the association of each environmental factor and PcP hospital admission.

resultsHospital admissions were significantly more common in the summer than in the other seasons. Increases in temperature and sulfur dioxide levels were independently associated with hospital admissions for PcP, but the effects of sulfur dioxide were modified by increasing carbon monoxide levels.

conclusionsThis study identifies both climatological and air pollution constituents as independent risk factors for hospitalization of HIV-positive patients with PcP in San Francisco. Thus, the environmental effects on PcP are more likely complex than previously thought. Further studies are needed to understand how these factors exert their effects and to determine if these factors are associated with PcP in other geographic locations.

Indexed as

AdultAIDS-Related Opportunistic InfectionsAir PollutionClimateCross-Over StudiesFemaleHIV InfectionsHospitalizationHumansLogistic ModelsMaleMiddle AgedMultivariate AnalysisOdds RatioPneumonia, PneumocystisRisk Factors

Identifiers

PMID23042978
PMCPMC3571628
OpenAlexW2136425027

What OpenQuestion holds

Textmetadata
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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.