Tidy a cohortTimeATTs object

Returns a broom-style tidy data frame for the output of cohortTimeATTs(). Renames the snake_case columns to broom conventions (se -> std.error, p_value -> p.value, ci_low / ci_high -> conf.low / conf.high), keeps the time column, and adds a term column ("cohort_<cohort label>_time_<time>") plus a statistic column (estimate / std.error) so the schema parallels tidy.cohortStudy() and tidy.eventStudy() for downstream bind_rows() consumers. When the input carries a selected column (fetwfe / betwfe), it is passed through as the final column.

Usage

# S3 method for class 'cohortTimeATTs'
tidy(x, ...)

Arguments

x

A cohortTimeATTs object returned by cohortTimeATTs().

...

Unused; present for S3 compatibility.

Value

A data frame with one row per (cohort, time) cell and columns term, time, estimate, std.error, statistic, p.value, conf.low, conf.high, and (if present in the input) selected.

Details

Confidence intervals are the pointwise 1 - alpha Wald bounds cohortTimeATTs() computed (encoding the alpha passed there); like tidy.cohortStudy() this method passes them through rather than recomputing at a custom conf.level.

Examples

if (FALSE) { # \dontrun{
  res <- fetwfeWithSimulatedData(
    simulateData(genCoefs(G = 3, T = 6, d = 2, density = 0.5, eff_size = 2),
                 N = 120, sig_eps_sq = 1, sig_eps_c_sq = 0.5, seed = 123)
  )
  broom::tidy(cohortTimeATTs(res))
} # }