Nothing
superpc.fit.to.outcome <- function(fit,
data.test,
score,
competing.predictors=NULL,
print=TRUE,
iter.max=5) {
type <- fit$type
if (type == "survival") {
temp.list=makelist(data.test$y, data.test$censoring.status, score)
}
if (type == "regression") {
temp.list=makelist(data.test$y,NULL, score)
}
if (!is.null(competing.predictors)) {
temp.list=c(temp.list,competing.predictors)
}
if (type == "survival"){
results <- survival::coxph(formula=survival::Surv(y, censoring.status) ~ .,
data=temp.list,
control=survival::coxph.control(iter.max=iter.max))
} else {
results <- lm(data.test$y~., data=temp.list)
}
if (print) {
print(summary(results))
}
ss <- summary(results)
if (type == "survival") {
test.stat <- ss$logtest[1]
df <- ss$logtest[2]
pvalue <- ss$logtest[3]
}
if (type == "regression") {
test.stat <- ss$fstat[1]
df <- ss$fstat[2:3]
pvalue <- 1-pf(test.stat,df[1],df[2])
}
teststat.table <- matrix(c(test.stat, df, pvalue), nrow=1)
if (length(df) == 1) {
dflabel="df"
}
if (length(df) == 2) {
dflabel=c("df1", "df2")
}
dimnames(teststat.table) <- list(NULL, c("test statistic",dflabel,"p-value"))
return(list(results=results,
teststat.table=teststat.table,
coeftable=ss$coef))
}
makelist <- function (y,
censoring.status,
predictors) {
val <- list(y=y)
if (!is.null(censoring.status)) {
val$censoring.status=censoring.status
}
if (!is.matrix(predictors)) {
val$score.1 <- predictors
}
if (is.matrix(predictors)) {
if (ncol(predictors) > 3) {
stop("Can't have > 3 principal components")
}
predictor.type <- dimnames(predictors)[[2]]
if (is.null(dimnames(predictors)[[2]])) {
predictor.type=rep("continuous",ncol(predictors))
}
score1 <- predictors[, 1]
if(predictor.type[1] == "factor") {
score1 <- as.factor(score1)
}
val$score.1 <- score1
if (ncol(predictors) > 1) {
score2 <- predictors[, 2]
if (predictor.type[2] == "factor") {
score2 <- as.factor(score2)
}
val$score.2 <- score2
}
if (ncol(predictors) > 2) {
score3 <- predictors[, 3]
if (predictor.type[3] == "factor") {
score3 <- as.factor(score3)
}
val$score.3 <- score3
}
}
return(val)
}
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