Evidence map›Paper›PMID 40293690›Full record

ArticleJournal of racial and ethnic health disparities2026

Assessment of Differences in Colorectal Cancer Outcomes by Geographic Region for Black Patients in the United States.

Mohammed O Suraju, Darren M Gordon, Erica Maduakolam, Jordan Grimmett, Alexander Troester, Hassan Aziz, Vincent Reid, Paolo Goffredo, Imran Hassan, Christopher Iverson

Abstract read
In one paragraph

Article in Journal of racial and ethnic health disparities, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

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

  1. Pooled it
  2. 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

10 authors.

Mohammed O SurajuDepartment of Surgery, University of Iowa Carver College of Medicine, Iowa City, USA.ORCID 0000-0003-1960-5790
Darren M GordonDepartment of Surgery, University of Iowa Carver College of Medicine, Iowa City, USA.
Erica MaduakolamDepartment of Surgery, University of Iowa Carver College of Medicine, Iowa City, USA.
Jordan GrimmettDepartment of Surgery, University of Iowa Carver College of Medicine, Iowa City, USA.
Alexander TroesterDivision of Colon & Rectal Surgery, University of Minnesota, Minneapolis, MN, USA.
Hassan AzizDepartment of Surgery, University of Iowa Carver College of Medicine, Iowa City, USA.
Vincent ReidDepartment of Surgery, University of Iowa Carver College of Medicine, Iowa City, USA.
Paolo GoffredoDivision of Colon & Rectal Surgery, University of Minnesota, Minneapolis, MN, USA.
Imran HassanDepartment of Surgery, University of Iowa Carver College of Medicine, Iowa City, USA.
Christopher IversonDepartment of Internal Medicine, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA, 1516 JCP52242, USA. christopher-iverson@uiowa.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionBlack patients have the worst survival outcomes from colorectal cancer (CRC) in the US. In addition, disparities and differences in mortality outcomes among Black and NHW patients across the four US census regions (Northeast [NE], South, West, Midwest [MW]) remain unexplored. We hypothesized that survival outcomes for Black patients would differ across the US census regions and might correlate with socioeconomic factors.

methodsBlack and Non-Hispanic White (NHW) patients ≥ 45 years of age with a diagnosis of colon or rectal adenocarcinoma between 2010 and 2018 were identified in the National Cancer Database for survival analysis. Survival differences were further validated using the Surveillance, Epidemiology, and End Results (SEER) database to investigate 5-year cause-specific survival (CSS).

resultsFor colon adenocarcinoma, the largest difference in median overall survival (OS) between NHW and Black patients was in the MW (67 months Black vs. 74 months NHW, P < 0.001). For rectal cancer, the largest difference was in the West (60 months Black vs. 84 months NHW, P < 0.001). Black patients receiving care in the MW had the lowest median OS for CRC, while those in the NE had the highest (colon: 67 months MW vs. 100 months NE; rectum: 55 months MW vs. 79 months NE). In multivariable analyses of the Black patient cohort, cancer care in the NE was associated with decreased mortality risk compared to other regions.

conclusionGeographic region of care appears to correlate with survival differences for CRC. Exploring these differences may facilitate improved understanding of systemic and structural drivers of health inequities and aid improved resource allocation.

Indexed as

AdenocarcinomaBlack or African AmericanColorectal NeoplasmsHealth Status DisparitiesAgedFemaleHumansMaleMiddle AgedSEER ProgramSocioeconomic Disparities in HealthSurvival AnalysisUnited StatesWhiteColon cancerDisparitiesRectal cancerSurvival

Identifiers

PMID40293690
PMCPMC13346272

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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.