From 11f64cd1aaea745b357e387839b41b093ccdbd23 Mon Sep 17 00:00:00 2001
From: odai-saleh <odai.saleh@wfp.org>
Date: Tue, 3 Feb 2026 17:10:42 +0100
Subject: [PATCH] R LCSFS new syntax

---
 .../Livelihood-Coping-Strategies-FS/LCSI-FS.R | 129 ++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 Indicators/Livelihood-Coping-Strategies-FS/LCSI-FS.R

diff --git a/Indicators/Livelihood-Coping-Strategies-FS/LCSI-FS.R b/Indicators/Livelihood-Coping-Strategies-FS/LCSI-FS.R
new file mode 100644
index 0000000..8295013
--- /dev/null
+++ b/Indicators/Livelihood-Coping-Strategies-FS/LCSI-FS.R
@@ -0,0 +1,129 @@
+# ------------------------------------------------------------
+# WFP Standardized Scripts
+# Livelihood Coping Strategies – Food Security (LCS-FS)
+# Last Updated: January 2026
+# ------------------------------------------------------------
+
+library(dplyr)
+
+# ------------------------------------------------------------
+# 1) Strategy variables (EXAMPLE SET – adapt per assessment)
+# ------------------------------------------------------------
+
+stress_vars <- c(
+  "Lcs_stress_DomAsset",
+  "Lcs_stress_Utilities",
+  "Lcs_stress_Saving",
+  "Lcs_stress_BorrowCash"
+)
+
+crisis_vars <- c(
+  "Lcs_crisis_ProdAssets",
+  "Lcs_crisis_Health",
+  "Lcs_crisis_OutSchool"
+)
+
+emergency_vars <- c(
+  "Lcs_em_ResAsset",
+  "Lcs_em_Begged",
+  "Lcs_em_IllegalAct"
+)
+
+all_lcs_vars <- c(stress_vars, crisis_vars, emergency_vars)
+
+# Expected coding:
+# 10 = No, because we did not need to
+# 20 = No, because already exhausted / cannot continue
+# 30 = Yes
+# 9999 = Not applicable
+
+# ------------------------------------------------------------
+# 2) Check individual strategies (SPSS FREQUENCIES equivalent)
+# ------------------------------------------------------------
+lcs_fs_overview <- lapply(df[all_lcs_vars], function(x) table(x, useNA = "ifany"))
+lcs_fs_overview
+
+# ------------------------------------------------------------
+# 3) Compute stress coping (binary, weighted = 2)
+#    SPSS: if ANY stress strategy is 20 or 30 → Stress = 2
+# ------------------------------------------------------------
+df <- df %>%
+  mutate(
+    Stress_coping_FS = ifelse(
+      rowSums(across(all_of(stress_vars), ~ .x %in% c(20, 30))) > 0,
+      2L, 0L
+    )
+  )
+
+# ------------------------------------------------------------
+# 4) Compute crisis coping (binary, weighted = 3)
+# ------------------------------------------------------------
+df <- df %>%
+  mutate(
+    Crisis_coping_FS = ifelse(
+      rowSums(across(all_of(crisis_vars), ~ .x %in% c(20, 30))) > 0,
+      3L, 0L
+    )
+  )
+
+# ------------------------------------------------------------
+# 5) Compute emergency coping (binary, weighted = 4)
+# ------------------------------------------------------------
+df <- df %>%
+  mutate(
+    Emergency_coping_FS = ifelse(
+      rowSums(across(all_of(emergency_vars), ~ .x %in% c(20, 30))) > 0,
+      4L, 0L
+    )
+  )
+
+# ------------------------------------------------------------
+# 6) Highest coping behaviour (FS)
+# ------------------------------------------------------------
+df <- df %>%
+  mutate(
+    Max_coping_behaviourFS = pmax(
+      Stress_coping_FS,
+      Crisis_coping_FS,
+      Emergency_coping_FS,
+      na.rm = TRUE
+    ),
+    Max_coping_behaviourFS = ifelse(Max_coping_behaviourFS == 0, 1L, Max_coping_behaviourFS),
+    Max_coping_behaviourFS = factor(
+      Max_coping_behaviourFS,
+      levels = c(1,2,3,4),
+      labels = c(
+        "Household did not apply coping strategies",
+        "Household applied stress coping strategies",
+        "Household applied crisis coping strategies",
+        "Household applied emergency coping strategies"
+      )
+    )
+  )
+
+# ------------------------------------------------------------
+# 7) Distribution checks
+# ------------------------------------------------------------
+table(df$Stress_coping_FS, useNA = "ifany")
+table(df$Crisis_coping_FS, useNA = "ifany")
+table(df$Emergency_coping_FS, useNA = "ifany")
+table(df$Max_coping_behaviourFS, useNA = "ifany")
+
+# ------------------------------------------------------------
+# 8) Optional IPC classification (LCS-FS only)
+# ------------------------------------------------------------
+df <- df %>%
+  mutate(
+    Max_coping_behaviourFS_IPC = factor(
+      as.numeric(Max_coping_behaviourFS),
+      levels = c(1,2,3,4),
+      labels = c(
+        "LCSI [none] - IPC Phase 1",
+        "LCSI [stress] - IPC Phase 2",
+        "LCSI [crisis] - IPC Phase 3",
+        "LCSI [emergency] - IPC Phase 4-5"
+      )
+    )
+  )
+
+table(df$Max_coping_behaviourFS_IPC, useNA = "ifany")