Nothing
print.lewbel.model <-
function(x, ...){
cat("Call:\n")
print(x$call)
cat("\nCoefficients and Standard Errors:\n")
printCoefmat(x$coef.est, P.values=T, has.Pvalue=T)
cat("\nOveridentification Test:\n")
print(x$j.test)
cat("\nPartial F-test Statistics for Weak IV Detection:\n")
print(x$f.test.stats)
cat("\nNumber of Observations:", x$num.obs, "\n")
}
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