Evidence map›Paper›PMID 28193199›Full record

ArticleBMC infectious diseases2017

A population-based study of chronic hepatitis C in immigrants and non-immigrants in Quebec, Canada.

Christina Greenaway, Laurent Azoulay, Robert Allard, Joseph Cox, Viet Anh Tran, Claire Nour Abou Chakra, Russ Steele, Marina Klein

Abstract read
In one paragraph

Article in BMC infectious diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
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  10. Prevalence and risk factors of active hepatitis C infection among at-risk migrant populations in Madrid, Spain, 2019 to 2023.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Article
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  16. Article
  17. Hepatitis C Virus Screening of High-Risk Patients in a Canadian Emergency Department.Canadian journal of gastroenterology & hepatology · 2020
    Observational
  18. Review
  19. Review
  20. ESRD among Immigrants to Ontario, Canada: A Population-Based Study.Journal of the American Society of Nephrology : JASN · 2018
    Article
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

8 authors.

Christina GreenawayDivision of Infectious Diseases, Jewish General Hospital, McGill University, 3755 Côte St. Catherine Road, Room E-0057, Montreal, PQ H3T 1E2, Canada. ca.greenaway@mcgill.ca.
Laurent AzoulayCentre for Clinical Epidemiology, Lady Davis Research Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Canada.
Robert AllardDepartment of Oncology, McGill University, Montreal, Canada.
Joseph CoxSexually Transmitted Infections Division, Montreal Public Health Department, Montreal, Canada.
Viet Anh TranCentre for Clinical Epidemiology, Lady Davis Research Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Canada.
Claire Nour Abou ChakraCentre for Clinical Epidemiology, Lady Davis Research Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Canada.
Russ SteeleCentre for Clinical Epidemiology, Lady Davis Research Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, Canada.
Marina KleinDivision of Infectious Diseases, McGill University Health Center, McGill University, Montreal, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundImmigrants originating from intermediate and high HCV prevalence countries may be at increased risk of exposure to hepatitis C infection (HCV) in their countries of origin, however they are not routinely screened after arrival in most low HCV prevalence host countries. We aimed to describe the epidemiology of HCV in immigrants compared to the Canadian born population.

methodsUsing the reportable infectious disease database linked to the landed immigration database and several provincial administrative databases, we assembled a cohort of all reported cases of HCV in Quebec, Canada (1998-2008). Underlying co-morbidities were identified in the health services databases. Stratum specific rates of reported cases/100,000, rate ratios (RRs) and trends over the study period were estimated.

resultsA total of 20,862 patients with HCV were identified, among whom 1922 (9.2%) were immigrants. Immigrants were older and diagnosed a mean of 9.8 ± 7 years after arrival. The Canadian born population was more likely to have behavior co-morbidities (problematic alcohol or drug use) and HIV co-infection. Immigrants from Sub-Saharan Africa, Asia and Eastern Europe had the highest HCV reported rates with RRs compared to non-immigrants ranging from 1.5 to 1.7. The age and sex adjusted rates decreased by 4.9% per year in non-immigrants but remained unchanged in immigrants. The proportion of HCV occurring in immigrants doubled over the study period from 5 to 11%.

conclusionsImmigrants from intermediate and high HCV prevalence countries are at increased risk for HCV and had a mean delay in diagnosis of almost 10 years after arrival suggesting that they may benefit from targeted HCV screening and earlier linkage to care.

Indexed as

Emigrants and ImmigrantsPublic HealthAdolescentAdultAgedCoinfectionEndemic DiseasesFemaleHealth Knowledge, Attitudes, PracticeHepatitis C, ChronicHumansMaleMass ScreeningMiddle AgedQuebecResearch DesignHepatitis CImmigrantIncidenceRatesViral hepatitis

Identifiers

PMID28193199
PMCPMC5307836

What OpenQuestion holds

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LicenceCC BY
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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.