Evidence map›Paper›PMID 26118767›Full record

ArticleEpidemiology and infection2016

A case-control study of risk factors for death from 2009 pandemic influenza A(H1N1): is American Indian racial status an independent risk factor?

T W Hennessy, D Bruden, L Castrodale, K Komatsu, L M Erhart, D Thompson, K Bradley, D R O'Leary, J McLaughlin, M Landen and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Epidemiology and infection, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 26% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Pooled it
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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 6 institutions in 1 country.

T W HennessyArctic Investigations Program,US Centers for Disease Control and Prevention (CDC),Anchorage,AK,USA.
D BrudenArctic Investigations Program,US Centers for Disease Control and Prevention (CDC),Anchorage,AK,USA.
L CastrodaleState of Alaska,Division of Public Health,Anchorage,AK,USA.
K KomatsuArizona Department of Health Services,Phoenix,AZ,USA.
L M ErhartArizona Department of Health Services,Phoenix,AZ,USA.
D ThompsonNew Mexico Department of Health,Santa Fe,NM,USA.
K BradleyOklahoma State Department of Health,Oklahoma City,OK,USA.
D R O'LearyWyoming Department of Health,Cheyenne,WY,USA.
J McLaughlinState of Alaska,Division of Public Health,Anchorage,AK,USA.
M LandenNew Mexico Department of Health,Santa Fe,NM,USA.
Investigative Team
Alaska Department of Health and Social Services · USArizona Department of Health Services · USCenters for Disease Control and Prevention · USNew Mexico Department of Health · USOklahoma State Department of Health · USWyoming State Department of Health · US

Funding

Intramural CDC HHS CC999999NCHM CDC HHS 1U38HM000414NCHM CDC HHS U38 HM000414
6 · The paper itself

Abstract

Historically, American Indian/Alaska Native (AI/AN) populations have suffered excess morbidity and mortality from influenza. We investigated the risk factors for death from 2009 pandemic influenza A(H1N1) in persons residing in five states with substantial AI/AN populations. We conducted a case-control investigation using pandemic influenza fatalities from 2009 in Alaska, Arizona, New Mexico, Oklahoma and Wyoming. Controls were outpatients with influenza. We reviewed medical records and interviewed case proxies and controls. We used multiple imputation to predict missing data and multivariable conditional logistic regression to determine risk factors. We included 145 fatal cases and 236 controls; 22% of cases were AI/AN. Risk factors (P 45 years vs. <18 years], pre-existing medical conditions (mOR 7·1), smoking (mOR 3·0), delayed receipt of antivirals (mOR 6·5), and barriers to healthcare access (mOR 5·3). AI/AN race was not significantly associated with death. The increased influenza mortality in AI/AN individuals was due to factors other than racial status. Prevention of influenza deaths should focus on modifiable factors (smoking, early antiviral use, access to care) and identifying high-risk persons for immunization and prompt medical attention.

Indexed as

PandemicsAdolescentAdultAgedCase-Control StudiesChildChild, PreschoolHumansIndians, North AmericanInfantInfant, NewbornInfluenza A Virus, H1N1 SubtypeInfluenza, HumanMiddle AgedRisk FactorsUnited StatesInfectious disease epidemiologyinfluenzapandemic

Identifiers

PMID26118767
PMCPMC5222627
OpenAlexW2272116035

What OpenQuestion holds

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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.