Epidemiologic_study_hierarchy.png (625 × 564 pixels, file size: 46 KB, MIME type: image/png)
 | This is a file from the
Wikimedia Commons. Information from its
description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Human epidemiologic study hierarchy |
| Date | March 2020 |
| Source | https://www.cdc.gov/niosh/docs/2020-106/pdfs/2020-106revised032020.pdf |
| Author | National Institute for Occupational Safety and Health |
This figure depicts types of epidemiological studies in a hierarchy.
The weight of evidence for causality increases with the height or level on the figure. The highest study is “Controlled human exposure” within a box labeling it as the only experimental study type.
The other study designs are contained within a box labeling observational studies. They are further divided into analytic and descriptive types with the analytic designs above the descriptive designs in the hierarchy. Two analytic studies types are shown to be (listed from most weight of evidence to least) longitudinal and cross-sectional. Two sub-categories of longitudinal study designs are mentioned (listed from most weight of evidence to least): cohort and case-control.
Three descriptive study designs are given (from most weight of evidence to least): ecologic, case series, and case report.
Licensing
|
This work is in the
public domain in the United States because it is a
work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of
Title 17, Chapter 1, Section 105 of the
US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual
U.S. state,
territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the
United States Postal Service
since 1978. (See §
313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see
The US Mint Terms of Use.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
|
This media file is uncategorized.
Please help improve this media file by adding it to one or more categories, so it may be associated with related media files (
how?), and so that it can be more easily found.
Please notify the uploader with {{subst:Please link images|File:Epidemiologic study hierarchy.png}} ~~~~ |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:24, 18 July 2024 |
| 625 × 564 (46 KB) | KrystinCarlson | Uploaded a work by National Institute for Occupational Safety and Health from https://www.cdc.gov/niosh/docs/2020-106/pdfs/2020-106revised032020.pdf with UploadWizard |
File usage
Epidemiologic_study_hierarchy.png (625 × 564 pixels, file size: 46 KB, MIME type: image/png)
| This is a file from the
Wikimedia Commons. Information from its
description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Human epidemiologic study hierarchy |
| Date | March 2020 |
| Source | https://www.cdc.gov/niosh/docs/2020-106/pdfs/2020-106revised032020.pdf |
| Author | National Institute for Occupational Safety and Health |
This figure depicts types of epidemiological studies in a hierarchy.
The weight of evidence for causality increases with the height or level on the figure. The highest study is “Controlled human exposure” within a box labeling it as the only experimental study type.
The other study designs are contained within a box labeling observational studies. They are further divided into analytic and descriptive types with the analytic designs above the descriptive designs in the hierarchy. Two analytic studies types are shown to be (listed from most weight of evidence to least) longitudinal and cross-sectional. Two sub-categories of longitudinal study designs are mentioned (listed from most weight of evidence to least): cohort and case-control.
Three descriptive study designs are given (from most weight of evidence to least): ecologic, case series, and case report.
Licensing
|
|
This work is in the
public domain in the United States because it is a
work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of
Title 17, Chapter 1, Section 105 of the
US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual
U.S. state,
territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the
United States Postal Service
since 1978. (See §
313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see
The US Mint Terms of Use.
|
|
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
|
|
This media file is uncategorized.
Please help improve this media file by adding it to one or more categories, so it may be associated with related media files (
how?), and so that it can be more easily found.
Please notify the uploader with {{subst:Please link images|File:Epidemiologic study hierarchy.png}} ~~~~ |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:24, 18 July 2024 |
| 625 × 564 (46 KB) | KrystinCarlson | Uploaded a work by National Institute for Occupational Safety and Health from https://www.cdc.gov/niosh/docs/2020-106/pdfs/2020-106revised032020.pdf with UploadWizard |