Evidence map›Paper›PMID 29338058›Full record

ArticlePloS one2018

Menstrual and reproductive factors and risk of breast cancer: A case-control study in the Fez region, Morocco.

Mohamed Khalis, Barbara Charbotel, Véronique Chajès, Sabina Rinaldi, Aurélie Moskal, Carine Biessy, Laure Dossus, Inge Huybrechts, Emmanuel Fort, Nawfel Mellas and 5 more

Abstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 3 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

36 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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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

15 authors.

Mohamed KhalisDepartment of Epidemiology, Faculty of Medicine and Pharmacy, Fez, Morocco.ORCID 0000-0003-4639-049X
Barbara CharbotelUniversity Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, Lyon, France.
Véronique ChajèsSection of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
Sabina RinaldiSection of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
Aurélie MoskalSection of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
Carine BiessySection of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
Laure DossusSection of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
Inge HuybrechtsSection of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
Emmanuel FortUniversity Claude Bernard Lyon1, Ifsttar, UMRESTTE, UMR T_9405, Lyon, France.
Nawfel MellasDepartment of Oncology, Hassan II University Hospital of Fez, Fez, Morocco.
Samira ElfakirDepartment of Epidemiology, Faculty of Medicine and Pharmacy, Fez, Morocco.
Hafida CharakaDepartment of Epidemiology, Faculty of Medicine and Pharmacy, Fez, Morocco.
Chakib NejjariDepartment of Epidemiology, Faculty of Medicine and Pharmacy, Fez, Morocco.
Isabelle RomieuSection of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France.
Karima El RhaziDepartment of Epidemiology, Faculty of Medicine and Pharmacy, Fez, Morocco.

Funding

World Health Organization 001
6 · The paper itself

Abstract

backgroundBreast cancer is the most common cancer in women worldwide. In the Moroccan context, the role of well-known reproductive factors in breast cancer remains poorly documented. The aim of this study was to explore the relationship between menstrual and reproductive factors and breast cancer risk in Moroccan women in the Fez region.

methodsA case-control study was conducted at the Hassan II University Hospital of Fez between January 2014 and April 2015. A total of 237 cases of breast cancer and 237 age-matched controls were included. Information on sociodemographic characteristics, menstrual and reproductive history, family history of breast cancer, and lifestyle factors was obtained through a structured questionnaire. Conditional logistic regression models were used to estimate odds ratios and 95% confidence intervals for breast cancer by menstrual and reproductive factors adjusted for potential confounders.

resultsEarly menarche (OR = 1.60, 95% CI: 1.08-2.38) and nulliparity (OR = 3.77, 95% CI: 1.98-7.30) were significantly related to an increased risk of breast cancer, whereas an early age at first full-term pregnancy was associated with a decreased risk of breast cancer (OR = 0.41, 95% CI: 0.25-0.65).

conclusionThe results of this study confirm the role of established reproductive factors for breast cancer in Moroccan women. It identified some susceptible groups at high risk of breast cancer. Preventive interventions and screening should focus on these groups as a priority. These results should be confirmed in a larger, multicenter study.

Indexed as

MenstruationAdultBreast NeoplasmsCase-Control StudiesFemaleHumansMiddle AgedMoroccoReproductive History

Identifiers

PMID29338058
PMCPMC5770054

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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.