Filter mcc object by groups

For grouped mcc objects, extracts results for specified groups only. This is useful for focusing on specific groups of interest or creating custom visualizations.

Usage

filter_mcc(x, groups)

Arguments

x

A grouped mcc object

groups

Character vector of group names to include

Value

An mcc object containing only the specified groups

Examples

# Create sample data with groups
library(dplyr)
df <- data.frame(
  id = c(1, 2, 3, 4, 4, 4, 4, 5, 5, 6, 6, 7, 8),
  time = c(8, 1, 5, 2, 6, 7, 8, 3, 3, 4, 5, 9, 2),
  cause = c(0, 0, 2, 1, 1, 1, 0, 1, 2, 1, 0, 0, 2),
  treatment = c("Control", "Control", "Treatment", "Treatment",
                "Treatment", "Treatment", "Treatment", "Control", "Control",
                "Placebo", "Placebo", "Placebo", "Placebo")
) |>
  arrange(id, time)

# Grouped analysis
mcc_full <- mcc(df, "id", "time", "cause", by = "treatment")
#> ℹ Adjusted time points for events occurring simultaneously for the same subject.

# Show all groups
mcc_groups(mcc_full)
#> [1] "Control"   "Treatment" "Placebo"  

# Filter to specific groups
mcc_filtered <- filter_mcc(mcc_full, c("Control", "Treatment"))
mcc_groups(mcc_filtered)  # Only "Control" and "Treatment"
#> [1] "Control"   "Treatment"

# Plot the filtered mcc object
plot(mcc_filtered)


# Clean up
rm(df, mcc_full, mcc_filtered)