Cox model summary for subgroup - vectorized version

Efficiently processes multiple subgroups at once. Useful when analyzing many subgroups (e.g., in cross-validation).

Usage

cox_summary_vectorized(
  data,
  outcome_col,
  event_col,
  treat_col,
  strata_col = NULL,
  subgroup_col = "subgroup",
  return_format = c("formatted", "numeric")
)

Arguments

data

Data frame with columns for Y, E, Treat, and optionally Strata.

outcome_col

Character. Name of outcome column.

event_col

Character. Name of event column.

treat_col

Character. Name of treatment column.

strata_col

Character. Name of strata column (optional).

subgroup_col

Character. Name of subgroup indicator column.

return_format

Character. "formatted" or "numeric".

Value

Data frame with one row per subgroup and HR results.