View source: R/compare_coef_vectors.R
compare_coef_vectors | R Documentation |
Compare coefficient vectors, after removing intercept, across multiple models.
compare_coef_vectors(model_list)
model_list |
A list of regression models. |
This function currently supports comparing coefficient vectors from two
models. The intercepts of the models are removed, if they exist, and the
coefficient vectors are compared by Hotelling's T^2 test. This can be
considered as an initial omnibus test for differences among the coefficients
before searching through all coefficients for individual differences using,
for example, compare_coefs
.
List of test results. This includes the chi-squared statistic, degrees of freedom, and p-value.
##Simulate data N = 500 m = rep(1:2, each=N) x1 = rnorm(n=N*2) x2 = rnorm(n=N*2) x3 = rnorm(n=N*2) y = x1 + x2 + x3 + rnorm(n=N*2) dat = data.frame(m, x1, x2, x3, y) m1 = lm(y ~ x1 + x2 + x3, data=dat, subset=m==1) m2 = lm(y ~ x1 + x2 + x3, data=dat, subset=m==2) mList = list(m1, m2) compare_coef_vectors(model_list = mList)
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