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#' @templateVar class systemfit
#' @template title_desc_tidy
#'
#' @param x A `systemfit` object produced by a call to [systemfit::systemfit()].
#' @template param_confint
#' @template param_unused_dots
#'
#' @evalRd return_tidy(
#' "term",
#' "estimate",
#' "std.error",
#' "p.value",
#' "conf.low",
#' "conf.high"
#' )
#'
#' @details This tidy method works with any model objects of class `systemfit`.
#' Default returns a tibble of six columns.
#'
#' @examplesIf rlang::is_installed("systemfit")
#'
#' set.seed(27)
#'
#' # load libraries for models and data
#' library(systemfit)
#'
#' # generate data
#' df <- data.frame(
#' X = rnorm(100),
#' Y = rnorm(100),
#' Z = rnorm(100),
#' W = rnorm(100)
#' )
#'
#' # fit model
#' fit <- systemfit(formula = list(Y ~ Z, W ~ X), data = df, method = "SUR")
#'
#' # summarize model fit with tidiers
#' tidy(fit)
#' tidy(fit, conf.int = TRUE)
#'
#' @export
#' @seealso [tidy()], [systemfit::systemfit()]
#'
#' @family systemfit tidiers
#' @aliases systemfit_tidiers
#'
tidy.systemfit <- function(x, conf.int = TRUE, conf.level = 0.95, ...) {
check_ellipses("exponentiate", "tidy", "systemfit", ...)
ret <- as_tibble(summary(x)$coefficients, rownames = "term")
colnames(ret) <- c("term", "estimate", "std.error", "statistic", "p.value")
if (conf.int) {
# can't use broom_confint_terms since the resulting confidence
# intervals are of type `confint.systemfit` not `matrix`
ci <- confint(x, level = conf.level)
colnames(ci) <- c("conf.low", "conf.high")
ci <- as_tibble(unclass(ci), rownames = "term")
ret <- left_join(ret, ci, by = "term")
}
ret
}
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