Reference health
Against quantiles: categorization of continuous variables in epidemiologic research, and its discontents
18/18 checkable references clean · checked 2026-07-23
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
2 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 18 checked references that resolve
resolves10.1093/jnci/djk094
Dietary Fat and Postmenopausal Invasive Breast Cancer in the National Institutes of Health-AARP Diet and Health Study Cohort
resolves10.1001/jama.285.24.3116
Relationship Between Annual Volume of Patients Treated by Admitting Physician and Mortality After Acute Myocardial Infarction
resolves10.1097/00001648-199507000-00025
Avoiding Power Loss Associated with Categorization and Ordinal Scores in Dose-Response and Trend Analysis
resolves10.1093/aje/kwh295
Arsenic Concentrations in Prediagnostic Toenails and the Risk of Bladder Cancer in a Cohort Study of Male Smokers
resolves10.1001/jama.284.23.3028
Influence of Hospital Procedure Volume on Outcomes Following Surgery for Colon Cancer
resolves10.1002/1097-0258(20000730)19:14<1831::AID-SIM502>3.0.CO;2-1
A strategy for modelling the effect of a continuous covariate in medicine and epidemiology
resolves10.1093/jnci/djm060
The Surgical Learning Curve for Prostate Cancer Control After Radical Prostatectomy
resolves10.1016/j.jclinepi.2007.01.008
Categorizing BMI may lead to biased results in studies investigating in-hospital mortality after isolated CABG
resolves10.1186/1741-7015-6-6
Prostate-specific antigen at or before age 50 as a predictor of advanced prostate cancer diagnosed up to 25 years later: A case-control study
resolves10.1158/1055-9965.EPI-10-1003
A Panel of Kallikrein Marker Predicts Prostate Cancer in a Large, Population-Based Cohort Followed for 15 Years without Screening
resolves10.1055/s-0038-1634008
Building Multivariable Regression Models with Continuous Covariates in Clinical Epidemiology
resolves10.1016/S1470-2045(09)70079-8
The surgical learning curve for laparoscopic radical prostatectomy: a retrospective cohort study
The 2 references without a DOI — listed, not checked
no DOI — not checkedRothman K, Greenland S, Lash T: Modern Epidemiology. 2008, Lippincott Williams & Wilkins, 3:
no DOI — not checkedSimunovic M, Rempel E, Theriault ME, Coates A, Whelan T, Holowaty E, Langer B, Levine M: Influence of hospital characteristics on operative death and survival of patients after major cancer surgery in Ontario. Can J Surg. 2006, 49 (4): 251-258.
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work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
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