Segmented Regression
1.4 هزار بار بازدید -
11 ماه پیش
-
A brief introduction to the
A brief introduction to the motivation and math behind segmented regression and how to implement it in R. We explore a data example using NHANES data to fit a breakpoint to SHBG across age. The code example illustrates how to evaluate for multiple breakpoints and to evaluate the model fit.
A video for the Advanced Biostatistical Methods I (BIOS 6618) course in the Department of Biostatistics and Informatics at the University of Colorado-Anschutz Medical Campus taught by Dr. Alex Kaizer. Slides and additional material available at https://www.alexkaizer.com/bios_6618.
00:00 Intro Song
00:20 Welcome
00:39 Motivating Data Example (NHANES)
02:47 Intro to Segmented Regression
03:35 Extension from Linear Regression
05:46 Hypothesis Testing for Breakpoints
07:42 Example in R
09:57 Davies' Test in R
11:06 Breakpoint CI
11:59 SLR in Each Segment
14:47 Adding More Breakpoints?
16:31 AIC and BIC for Breakpoints
A video for the Advanced Biostatistical Methods I (BIOS 6618) course in the Department of Biostatistics and Informatics at the University of Colorado-Anschutz Medical Campus taught by Dr. Alex Kaizer. Slides and additional material available at https://www.alexkaizer.com/bios_6618.
00:00 Intro Song
00:20 Welcome
00:39 Motivating Data Example (NHANES)
02:47 Intro to Segmented Regression
03:35 Extension from Linear Regression
05:46 Hypothesis Testing for Breakpoints
07:42 Example in R
09:57 Davies' Test in R
11:06 Breakpoint CI
11:59 SLR in Each Segment
14:47 Adding More Breakpoints?
16:31 AIC and BIC for Breakpoints
11 ماه پیش
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