Evidence map›Paper›PMID 10712222›Full record

ArticleAmerican journal of human genetics2000

Bias and efficiency in family-based gene-characterization studies: conditional, prospective, retrospective, and joint likelihoods.

P Kraft, D C Thomas

Abstract read
In one paragraph

Article in American journal of human genetics, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 5 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

45 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  6. Article
  7. Meta-Analysis of Breast Cancer Risk for Individuals with PALB2 Pathogenic Variants.medRxiv : the preprint server for health sciences · 2024
    Article
  8. Article
  9. PREDICTION OF HEREDITARY CANCERS USING NEURAL NETWORKS.The annals of applied statistics · 2022
    Article
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  12. Review
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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

2 authors.

P KraftDepartment of Preventive Medicine, University of Southern California, Los Angeles, CA, 90033, USA. pkraft@hsc.usc.edu
D C Thomas

Funding

Translational Research Support CoreP30ES007048 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Joseph Leo Wiemels · 1996 to 2026
$46.4M
NCI CFRBCCS INFORMATICS CENTER AT UCIU01CA078296 · NCI · UNIVERSITY OF CALIFORNIA IRVINE · PI ANTON-CULVER, HODA A. · 1998 to 2005
$5.2M
SURVIVAL MODELS FOR GENETIC EPIDEMIOLOGYR01CA052862 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI THOMAS, DUNCAN C. · 1991 to 2006
$1.9M
NCI NIH HHS CA52862NCI NIH HHS CA78296NCI NIH HHS R01 CA052862NCI NIH HHS U01 CA078296NIEHS NIH HHS ES07048NIEHS NIH HHS P30 ES007048
6 · The paper itself

Abstract

We revisit the usual conditional likelihood for stratum-matched case-control studies and consider three alternatives that may be more appropriate for family-based gene-characterization studies: First, the prospective likelihood, that is, Pr(D/G,A second, the retrospective likelihood, Pr(G/D); and third, the ascertainment-corrected joint likelihood, Pr(D,G/A). These likelihoods provide unbiased estimators of genetic relative risk parameters, as well as population allele frequencies and baseline risks. The parameter estimates based on the retrospective likelihood remain unbiased even when the ascertainment scheme cannot be modeled, as long as ascertainment only depends on families' phenotypes. Despite the need to estimate additional parameters, the prospective, retrospective, and joint likelihoods can lead to considerable gains in efficiency, relative to the conditional likelihood, when estimating genetic relative risk. This is true if baseline risks and allele frequencies can be assumed to be homogeneous. In the presence of heterogeneity, however, the parameter estimates assuming homogeneity can be seriously biased. We discuss the extent of this problem and present a mixed models approach for providing consistent parameter estimates when baseline risks and allele frequencies are heterogeneous. The efficiency gains of the mixed-model prospective, retrospective, and joint likelihoods relative to the efficiency of conditional likelihood are small in the situations presented here.

Indexed as

Genetic Predisposition to DiseaseModels, GeneticAllelesBiasCase-Control StudiesChromosome MappingFamily HealthGene FrequencyGenes, DominantGenes, RecessiveGenetic HeterogeneityGenotypeHumansLikelihood FunctionsMatched-Pair AnalysisNuclear Family

Identifiers

PMID10712222
PMCPMC1288146

What OpenQuestion holds

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Registered trials

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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.