Evidence map›Paper›PMID 28774167›Full record

ArticleEpidemiology and health2017

Geographic distribution of the incidence of colorectal cancer in Iran: a population-based study.

Fatemeh Khosravi Shadmani, Erfan Ayubi, Salman Khazaei, Mohadeseh Sani, Shiva Mansouri Hanis, Somayeh Khazaei, Mokhtar Soheylizad, Kamyar Mansori

Open access · diamondAbstract read
In one paragraph

Article in Epidemiology and health, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 5 pooled it
3.5field-weighted citation impact, top 6% of its field
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

34 citing papers in PubMed, 5 syntheses or guidelines pooled it, 62 citations in OpenAlex.

  1. Pooled it
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  6. Article
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  8. Association betweenIranian journal of public health · 2025
    Review
  9. The 13-Year Trend of Colorectal Cancer in Isfahan, Iran.International journal of preventive medicine · 2025
    Article
  10. Article
  11. Article
  12. Incidence of colorectal cancer in Iran: A systematic review and meta-analysis.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2024
    Review
  13. Article
  14. Article
  15. Geographical Distribution of Colorectal Cancer in Southwestern Iran Between Years 2011 and 2019.The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology · 2023
    Article
  16. Article
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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

8 authors at 7 institutions in 1 country.

Fatemeh Khosravi ShadmaniModeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran.ORCID 0000-0002-5172-7950
Erfan AyubiDepartment of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Salman KhazaeiDepartment of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.
Mohadeseh SaniSchool of Medicine, Zabol University of Medical Sciences, Zabol, Iran.
Shiva Mansouri HanisSchool of Public Health, Dezful University of Medical Sciences, Dezful, Iran.
Somayeh KhazaeiDepartment of Para Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
Mokhtar SoheylizadSocial Determinants in Health Promotion Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
Kamyar MansoriSocial Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran.ORCID 0000-0001-5008-8547
Hamedan University of Medical Sciences · IRDezful University of Medical Sciences · IRHormozgan University of Medical Sciences · IRIran University of Medical Sciences · IRKerman University of Medical Sciences · IRShahid Beheshti University of Medical Sciences · IRZabol University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesColorectal cancer (CRC) is the third most common cancer and the fourth most common cause of cancer death in the world. The aim of this study was to investigate the provincial distribution of the incidence of CRC across Iran.

methodsThis epidemiologic study used data from the National Cancer Registry of Iran and the Center for Disease Control and Prevention of the Ministry of Health and Medical Education of Iran. The average annual age-standardized rate (ASR) for the incidence of CRC was calculated for each province.

resultsWe found that adenocarcinoma (not otherwise specified) was the most common histological subtype of CRC in males and females, accounting for 81.91 and 81.95% of CRC cases, respectively. Signet ring cell carcinoma was the least prevalent subtype of CRC in males and females and accounted for 1.5 and 0.94% of CRC cases, respectively. In patients aged 45 years or older, there was a steady upward trend in the incidence of CRC, and the highest ASR of CRC incidence among both males and females was in the age group of 80-84 years, with an ASR of 144.69 per 100,000 person-years for males and 119.18 per 100,000 person-years for females. The highest incidence rates of CRC in Iran were found in the central, northern, and western provinces. Provinces in the southeast of Iran had the lowest incidence rates of CRC.

conclusionsWide geographical variation was found in the incidence of CRC across the 31 provinces of Iran. These variations must be considered for prevention and control programs for CRC, as well as for resource allocation purposes.

Indexed as

AdolescentAdultAgedAged, 80 and overChildChild, PreschoolColorectal NeoplasmsFemaleHumansIncidenceInfantInfant, NewbornIranMaleMiddle AgedRegistriesColorectal neoplasmsEpidemiologic studiesIncidenceIranSex

Identifiers

PMID28774167
PMCPMC5543296
OpenAlexW2615891699

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.