search for: longhit

Displaying 1 result from an estimated 1 matches for "longhit".

2005 Feb 20
1
logistic regression and 3PL model
...ot;) cat("\nConvergence message:", fit$message, "\n") invisible(fit) } I have been using "lower=.25" in the call for logitreg: options(contrasts = c("contr.treatment", "contr.poly")) X <- model.matrix(longhit ~ age*gender, data=data)[,-1] logitreg(X, data$longhit, lower =.25) However, this is giving me .25 as the value for intercepts and all the regression weights. Am I correcting for the guessing base rate correctly? Any suggestions or pointers would be greatly appreciated. Thank you in advance....