The suggested word limits for the text of each article type are included with descriptions of the article types. All manuscripts should be as concise as possible without sacrificing all information necessary for reproducibility and clarity.
All manuscripts must be submitted with continuous line numbering enabled (line numbers should NOT restart at 1 on each page). Any manuscripts received without continuous line numbering enabled will be returned to the author for revision before peer review begins.
Parts of a Manuscript
The title pages should include the following items in the order shown, beginning on the first page of the manuscript:
- Manuscript title, not to exceed 20 words [Titles should describe the research or topic of the paper but not summarize results or conclusions; titles generally should not contain abbreviations or numerical values, with the exception of abbreviated study names (e.g., NHANES)]
- Names of the authors spelled out in full
- Affiliations of all authors (department, institution, city, state/province, and country)
- Name of and contact information for corresponding author to whom page proofs should be sent, including complete address for express mail service, telephone number, and e-mail address
- A short running title, not to exceed 50 characters and spaces
- Acknowledgments, including grant information
- A competing financial interests declaration.
All research papers, reviews, and commentaries must include a structured abstract of ≤ 250 words, which should not contain references. No information should be reported in the abstract that does not appear in the text of the manuscript. In general we recommend that authors indicate study names or sources of data that are integral to the study in the title or abstract. Conclusions should mention the relevance of the work to environmental health science. Headings to be used in the structured abstracts vary by article type as described below:
- Commentaries: Background, Objectives, Discussion, Conclusions
- Research Articles, Quantitative Reviews, and Meta-Analyses: Background, Objectives, Methods, Results, Conclusions
- Substantive Reviews and Reviews Based on Meetings or Conferences: Background, Objectives, Methods, Discussion, Conclusions.
The organization of the text varies by article type and roughly reflects the structure of the abstract:
- Commentaries: Introduction (comprising the Background and Objectives stated in the abstract), Discussion, Conclusions
- Research Articles: Introduction (comprising the Background and Objectives stated in the abstract), Methods, Results, Discussion, Conclusions
- Reviews: Introduction (comprising the Background and Objectives stated in the abstract), Methods (including data sources), Results (as appropriate), Discussion, Conclusions.
Concise subheadings (≤ 8 words each) may be used to designate major topics within each of these sections.
References, Tables, and Figures
The following items should be provided after the main text of the paper in this order: References, Tables, Figure Legends. The References, Tables, and Figure Legends must each begin on a new page of the manuscript. Figures and Supplemental Material should be provided as separate files. Additional information concerning each of these sections is provided below.
EHP requires that primary methods be described in the main text, including information on the study design, study population or experimental model, exposures and outcomes, and statistical analyses. Supplemental Material should be reserved for background information that is not required by most readers to understand and interpret your findings, but is needed to support transparency. Such information may include (but is not limited to):
- lists of reagents and sources, SNPs, and primers
- background data, such as population counts used in risk assessment, results of screening analyses used to identify observations or exposures for further evaluation, lists of consortium members, or detailed information on studies in systematic reviews
- results of sensitivity analyses, e.g., to assess the potential influence of model assumptions, analytic approaches, effect modification, or outliers
- tables of numeric data used to generate figures and graphs included in the main text
- complex model derivations and formulas
- directed acyclic graphs (DAGs)
- software code
- raw data
Supplemental Material may include information in alternative formats, such as Excel files (ideal for large tables), text files (for data analysis code), video files (open file formats preferred, such as MP4 and AVI), audio files (in WAV or MP3 format), and presentations (Microsoft Powerpoint or PDF). Proprietary code files can also be posted if necessary (software dependencies should be listed in the text of the Supplemental Materials), and open-source software created with the paper can also be hosted for download and installation.