predict.RRlog {RRreg}

Predict Individual Prevalences of the RR Attribute

Description

Predictions of the RR logistic regression model for the individual probabilities (or logits) of having the sensitive RR attribute, or of the probability of the RR responses.

Usage

## S3 method for class 'RRlog'
predict(
  object,
  newdata = NULL,
  type = c("link", "response", "attribute"),
  se.fit = FALSE,
  ci = 0.95,
  ...
)

Arguments

object

A fitted RRlog model

newdata

An optional vector, matrix, or data.frame with values on the predictor variables. Note that for matrices, the order of predictors should match the order of predictors in the formula. Uses the fitted values of the model if omitted.

type

"response" returns predicted probabilities for the (observable) RR responses, "link" returns predicted logit-values for the (latent) sensitive attribute, and "attribute" returns predicted probabilities of having the (latent) sensitive attribute.

se.fit

Return standard errors for the predicted values in addition to confidence intervals. SEs on the logit scale are computed using the observed Fisher information from the fitted model. Standard errors for the probability scale are computed using the delta method.

ci

Confidence level for confidence interval. If ci=FALSE, no confidence interval is returned. Confidence intervals on the probability scale (if type="response" or type="attribute") are computed based on the CI on the logit-scale using the inverse link function (hence, the CI will in general not be symmetric).

...

ignored

Value

either a vector of predicted values or a matrix with columns for the point estimates, confidence interval, and standard errors (if se.fit=TRUE and ci=.95).