# \#transformation

**URL:** https://discourse.datamethods.org/tag/transformation/65.md

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## [BBR Session 16: Transformations and Change](https://discourse.datamethods.org/t/bbr-session-16-transformations-and-change/3224)

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**Author:** [@f2harrell](https://discourse.datamethods.org/u/f2harrell)\
**Replies:** 19\
**Last updated:** [September 11, 2023, 4:19pm UTC](https://discourse.datamethods.org/t/bbr-session-16-transformations-and-change/3224 "2023-09-11T16:19:48Z")

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This is a topic for questions, answers, and discussions about session 16 of the Biostatistics for Biomedical Research course for 2020-04-24. Session topics and links are listed here . The session covers transforming var…

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## [Placing knots for restricted cubic splines](https://discourse.datamethods.org/t/placing-knots-for-restricted-cubic-splines/1841)

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**Author:** [@sme](https://discourse.datamethods.org/u/sme)\
**Replies:** 21\
**Last updated:** [August 12, 2019, 12:40pm UTC](https://discourse.datamethods.org/t/placing-knots-for-restricted-cubic-splines/1841 "2019-08-12T12:40:56Z")

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I was hoping someone might be able to offer some advice on placing knots for restricted cubic splines. In brief, I am helping a team of clinicians who want to predict which patients require a specialist team to meet them…

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## [Prediction with Regression - Transforming Variables](https://discourse.datamethods.org/t/prediction-with-regression-transforming-variables/328)

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**Author:** [@braggbear](https://discourse.datamethods.org/u/braggbear)\
**Replies:** 1\
**Last updated:** [August 4, 2018, 1:46pm UTC](https://discourse.datamethods.org/t/prediction-with-regression-transforming-variables/328 "2018-08-04T13:46:40Z")

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If I am running a regression to forecast and predict future sales, do I need to worry about transforming my predictor variables (ie: taking the log) if I only care about prediction and don’t need to interpret coefficient…