Remove wic_nutritional_risk_imputed, make is_wic_at_nutritional_risk data-read

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Author: baogorek

policyengine_us/tests/policy/baseline/gov/usda/wic/is_wic_at_nutritional_risk.yaml

@@ -1,28 +1,28 @@
-# Nutritional risk is a health assessment per 42 U.S.C. § 1786(b)(8).
-# In individual simulation, draw defaults to 0, so all persons in a
-# WIC-eligible category are assessed at nutritional risk (0 < rate).
-# In microsimulation, risk is assigned probabilistically by category.
+# Nutritional risk is resolved in the data package for microsimulation.
+# In individual simulation, default_value = True so all persons are assumed
+# at nutritional risk. NONE-category adults still get True, but is_wic_eligible
+# gates on demographic eligibility (category != NONE), so it's benign.
 
-- name: Case 1, infant at nutritional risk (draw=0, INFANT rate=0.95).
+- name: Case 1, infant at nutritional risk (default True).
   period: 2024-01
   input:
     age: 0
   output:
     is_wic_at_nutritional_risk: true
 
-- name: Case 2, child at nutritional risk (draw=0, CHILD rate=0.752).
+- name: Case 2, child at nutritional risk (default True).
   period: 2024-01
   input:
     age: 3
   output:
     is_wic_at_nutritional_risk: true
 
-- name: Case 3, non-WIC adult not at nutritional risk (NONE rate=0).
+- name: Case 3, non-WIC adult (default True, benign — gated by is_wic_eligible).
   period: 2024-01
   input:
     age: 35
   output:
-    is_wic_at_nutritional_risk: false
+    is_wic_at_nutritional_risk: true
 
 - name: Case 4, person receiving WIC is at nutritional risk.
   period: 2024-01

policyengine_us/variables/gov/usda/wic/is_wic_at_nutritional_risk.py

@@ -8,10 +8,4 @@ class is_wic_at_nutritional_risk(Variable):
     documentation = "Assessed as being at nutritional risk for the Special Supplemental Nutrition Program for Women, Infants and Children (WIC)"
     label = "At nutritional risk for WIC"
     reference = "https://www.law.cornell.edu/uscode/text/42/1786#b_8"
-
-    def formula(person, period, parameters):
-        wic_reported = person("receives_wic", period)
-        imputed_risk = person("wic_nutritional_risk_imputed", period)
-        category = person("wic_category", period)
-        has_wic_category = category != category.possible_values.NONE
-        return wic_reported | (imputed_risk & has_wic_category)
+    default_value = True