diff --git a/misc/half_propagation/createStats.R b/misc/half_propagation/createStats.R
new file mode 100644
index 0000000..6ae8797
--- /dev/null
+++ b/misc/half_propagation/createStats.R
@@ -0,0 +1,34 @@
+library(dplyr)
+library(taxPPro)
+library(purrr)
+
+dat <- read.table(
+    file = 'misc/half_propagation/bugphyzz_export_2023-11-07.tsv',
+    header = TRUE, sep = '\t'
+) |>
+    filter(!is.na(Attribute_group) & !is.na(Attribute)) |>
+    mutate(
+        data_name = case_when(
+            Attribute_type %in% c('multisate-union') ~ paste0(Attribute_group, '|', sub('--.*$', '', Attribute)),
+            TRUE ~ Attribute_group
+        )
+
+    )
+
+l <- split(dat, dat$data_name)
+
+ltp <- ltp()
+tip_data <- ltp$tip_data
+sourceCodes <- c('exp', 'igc', 'nas', 'tas')
+
+output <- map(l, ~ {
+    source_data <- .x |>
+        filter(Evidence %in% sourceCodes)
+    before <- mean(tip_data$NCBI_ID %in% unique(source_data$NCBI_ID)) * 100
+    after <- mean(tip_data$NCBI_ID %in% unique(dat$NCBI_ID)) * 100
+    data.frame(
+        before = before,
+        after = after
+    )
+}) |>
+    bind_rows(.id = 'data_name')