# Occupational Epidemiology/Research tools/Theoretical Program - open here/How to start and complete research projects - methodology/Structure for writing the article (Strobe) 1

STROBE Statement—Checklist of items that should be included in reports of cross-sectional studies

## Title page

* Article title
* Authors
* Affiliations
* Correspondence, name, email, affiliation

## Abstract

150-250 words

##### Main Manuscript
## Introduction Background/rationale

* Explain the scientific background and rationale for the investigation being reported

## Research question and objectives

* State the research questions, objectives and any prespecified hypotheses

## Methods and materials
##### Study design

* Present key elements of study design early in the paper

##### Setting

* Describe the setting, locations, and relevant dates, including periods of recruitment, exposure, follow-up, and data collection

##### Participants

* (a) Give the eligibility criteria, and the sources and methods of selection of participants

##### Variables

* Clearly define all outcomes, exposures, predictors, potential confounders, and effect modifiers. Give diagnostic criteria, if applicable *Give information separately for exposed and unexposed groups.

##### Data sources/ measurement

* For each variable of interest, give sources of data and details of methods of assessment (measurement). Describe comparability of assessment methods if there is more than one group

##### Bias

* Describe any efforts to address potential sources of bias

##### Study size

* Explain how the study size was arrived at
* Quantitative variables
* Explain how quantitative variables were handled in the analyses. If applicable, describe which groupings were chosen and why

##### Statistical methods

* a) Describe all statistical methods, including those used to control for confounding
* (b) Describe any methods used to examine subgroups and interactions
* (c) Explain how missing data were addressed
* (d) If applicable, describe analytical methods taking account of sampling strategy
* (e) Describe any sensitivity analyses

##### Cronograma

De cuándo se realizó el estudio y dónde

## Results
##### Participants

* (a) Report numbers of individuals at each stage of study—eg numbers potentially eligible, examined for eligibility, confirmed eligible, included in the study, completing follow-up, and analysed
* (b) Give reasons for non-participation at each stage
* (c) Consider use of a flow diagram

##### Descriptive data

* (a) Give characteristics of study participants (eg demographic, clinical, social) and information on exposures and potential confounders
* (b) Indicate number of participants with missing data for each variable of interest

##### Outcome data

* Report numbers of outcome events or summary measures

##### Main results

* (a) Give unadjusted estimates and, if applicable, confounder-adjusted estimates and their precision (eg, 95% confidence interval). Make clear which confounders were adjusted for and why they were included
* (b) Report category boundaries when continuous variables were categorized
* (c) If relevant, consider translating estimates of relative risk into absolute risk for a meaningful time period

##### Other analyses

* Report other analyses done—eg analyses of subgroups and interactions, and sensitivity analyses

## Discussion
##### Key results

Summarise key results with reference to study objectives

##### Limitations

* Discuss limitations of the study, taking into account sources of potential bias or imprecision. Discuss both direction and magnitude of any potential bias

##### Interpretation

* Give a cautious overall interpretation of results considering objectives, limitations, multiplicity of analyses, results from similar studies, and other relevant evidence

##### Generalisability

* Discuss the generalisability (external validity) of the study results

## Conclusions

What was found and what is the answer to the research question.

## Recommendations

* For prevention and new studies

##### Funding

Give the source of funding and the role of the funders for the present study and, if applicable, for the original study on which the present article is based