# Which variables can be used?

**URL:** <https://community.drivendata.org/t/which-variables-can-be-used/8886>\
**Category:** VisioMel Challenge\
**Created:** [April 23, 2023, 3:10pm UTC](https://community.drivendata.org/t/which-variables-can-be-used/8886 "2023-04-23T15:10:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JohnDS](https://avatars.discourse-cdn.com/v4/letter/j/e9bcb4/32.png) [@JohnDS](https://community.drivendata.org/u/JohnDS)\
**Post date:** [April 23, 2023, 3:10pm UTC](https://community.drivendata.org/t/which-variables-can-be-used/8886/1 "2023-04-23T15:10:37Z")

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Hi,

There is something I do not really understand. In the test\_metadata.csv, there are only age, sexe, body\_site, melanoma\_history and resolution variable. Does it means we can only use these variables in our model ?

Or, all variables in train\_metadata.csv are includee in the data file of real submission ?

Can you give me some precison on that point ?

IAvengers TEAM

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**Author:** ![Biototem](https://avatars.discourse-cdn.com/v4/letter/b/49beb7/32.png) [@Biototem](https://community.drivendata.org/u/Biototem)\
**Post date:** [April 24, 2023, 3:18am UTC](https://community.drivendata.org/t/which-variables-can-be-used/8886/2 "2023-04-24T03:18:28Z")

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You can check out the link for detailed instructions,

> **[VisioMel Challenge: Predicting Melanoma Relapse](https://www.drivendata.org/competitions/148/visiomel-melanoma/page/674/)**
>
> Use digitized microscopic slides to predict the likelihood of melanoma relapse within the next five years.

presumably:  
The test set images and metadata are only accessible in the runtime container and are mounted at /code\_execution/data.

test\_metadata.csv contains the following variables:

filename (str) - unique identifier for each WSI  
age (str) - age range of the patient at initial diagnosis  
sex (int) - sex of the patient at initial diagnosis, where 1=male and 2=female  
body\_site (str) - the site of the melanoma at initial diagnosis  
melanoma\_history (str) - whether the patient had melanoma before  
resolution (float) - the resolution at level 0 of the slide in microns per pixel  
Note that breslow and ulceration are not included in the test metadata. You may still find these variables useful in model training. See the data resources page for more on how pathologists use breslow depth and ulceration to make a prognosis. Annotated slide examples are also provided on the data download page.