Evidence map›Paper›PMID 28817326›Full record

ArticleAmerican journal of public health2017

Standard Period Life Table Used to Compute the Life Expectancy of Diseased Subpopulations: More Confusing Than Helpful.

Linda Perron, Marc Simard, Jacques Brisson, Denis Hamel, Ernest Lo

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in American journal of public health, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Mortality in Inflammatory Rheumatic Diseases: Lithuanian National Registry Data and Systematic Review.International journal of environmental research and public health · 2021
    Pooled it
  2. Article
  3. Article
  4. Dynamic changes and lifetime effect of functional disability profiles for stroke patients: real-world evidence from South Korea.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. Life expectancy and health-adjusted life expectancy in people with inflammatory bowel disease.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2020
    Article
  9. Article
  10. Perron et al. Respond.American journal of public health · 2018
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Linda PerronLinda Perron, Marc Simard, Denis Hamel, and Ernest Lo are with the Institut national de santé publique du Québec, Quebec City, QC. Linda Perron and Jacques Brisson are with the Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Quebec City. Jacques Brisson is also with the Centre de recherche du chu de Québec-Université Laval, Centre hospitalier universitaire de Québec, Quebec City. Ernest Lo is also with the Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC.
Marc SimardLinda Perron, Marc Simard, Denis Hamel, and Ernest Lo are with the Institut national de santé publique du Québec, Quebec City, QC. Linda Perron and Jacques Brisson are with the Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Quebec City. Jacques Brisson is also with the Centre de recherche du chu de Québec-Université Laval, Centre hospitalier universitaire de Québec, Quebec City. Ernest Lo is also with the Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC.
Jacques BrissonLinda Perron, Marc Simard, Denis Hamel, and Ernest Lo are with the Institut national de santé publique du Québec, Quebec City, QC. Linda Perron and Jacques Brisson are with the Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Quebec City. Jacques Brisson is also with the Centre de recherche du chu de Québec-Université Laval, Centre hospitalier universitaire de Québec, Quebec City. Ernest Lo is also with the Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC.
Denis HamelLinda Perron, Marc Simard, Denis Hamel, and Ernest Lo are with the Institut national de santé publique du Québec, Quebec City, QC. Linda Perron and Jacques Brisson are with the Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Quebec City. Jacques Brisson is also with the Centre de recherche du chu de Québec-Université Laval, Centre hospitalier universitaire de Québec, Quebec City. Ernest Lo is also with the Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC.
Ernest LoLinda Perron, Marc Simard, Denis Hamel, and Ernest Lo are with the Institut national de santé publique du Québec, Quebec City, QC. Linda Perron and Jacques Brisson are with the Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Quebec City. Jacques Brisson is also with the Centre de recherche du chu de Québec-Université Laval, Centre hospitalier universitaire de Québec, Quebec City. Ernest Lo is also with the Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Life expectancy (LE) based on a period life table (PLT) traditionally serves as a general population summary metric. It is, however, becoming more frequently reported for chronically afflicted subpopulations. In general populations, there is always an obvious real cohort sharing the hypothetical PLT cohort characteristics, and the LE estimate is intuitively understood as that real cohort mean survival time, assuming constancy of death risks. In diseased subpopulations, the correspondence between the hypothetical cohort and a real cohort is not straightforward. Furthermore, the excess mortality of chronic diseases usually changes according to age at onset and time since onset. The standard PLT method does not allow for proper control of these issues, so the LE estimate can only be deemed valid under specific assumptions. Without clear statements about the real cohort to whom the estimate is intended and the assumptions allowing disregard of the effect of age at onset and time since onset, LEs of afflicted subpopulations computed with the PLT are only abstract numbers summarizing mortality rates. If called "life expectancy," they can be seriously misleading. The same applies to health-adjusted LE.

Indexed as

Life TablesAge DistributionChronic DiseaseData Interpretation, StatisticalHumansLife ExpectancySex Distribution

Identifiers

PMID28817326
PMCPMC5607664

What OpenQuestion holds

Textmetadata
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.