Displaying 2 results from an estimated 2 matches for "betacoefficients".
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betacoefficient
2009 Jun 23
1
How to assign fixed beta coefficients in lrm for external validation
Hi,
I am planning to externally validate a logistic prediction model in a new
cohort. Outcome is mortality. The betacoefficients were derived from a
previous published article. It seems not possible in R to assign fixed beta
coefficients to predictors like lrm (death ~
intercept+beta1*var1+beta2*var2...). How do i solve this problem?
Thank you in advance.
Joey L
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2006 Jul 11
1
test regression against given slope for reduced major axis regression (RMA)
Hi,
for testing if the slope of experimental data differs from a
given slope I'm using the function
"test_regression_against_slope" (see below).
I am now confronted with the problem that I have data which
requires a modelII regression (also called reduced major axes
regression (RMA) or geometric mean regression). For this I use
the function "modelII" (see below).
What