diff --git a/inbox/archive/.extraction-debug/2026-01-01-frontiers-social-prescribing-health-economics-systematic-review.json b/inbox/archive/.extraction-debug/2026-01-01-frontiers-social-prescribing-health-economics-systematic-review.json
new file mode 100644
index 00000000..5ce61625
--- /dev/null
+++ b/inbox/archive/.extraction-debug/2026-01-01-frontiers-social-prescribing-health-economics-systematic-review.json
@@ -0,0 +1,24 @@
+{
+  "rejected_claims": [
+    {
+      "filename": "social-prescribing-produces-social-value-but-not-healthcare-cost-savings.md",
+      "issues": [
+        "missing_attribution_extractor"
+      ]
+    }
+  ],
+  "validation_stats": {
+    "total": 1,
+    "kept": 0,
+    "fixed": 1,
+    "rejected": 1,
+    "fixes_applied": [
+      "social-prescribing-produces-social-value-but-not-healthcare-cost-savings.md:set_created:2026-03-18"
+    ],
+    "rejections": [
+      "social-prescribing-produces-social-value-but-not-healthcare-cost-savings.md:missing_attribution_extractor"
+    ]
+  },
+  "model": "anthropic/claude-sonnet-4.5",
+  "date": "2026-03-18"
+}
\ No newline at end of file
diff --git a/inbox/archive/2026-01-01-frontiers-social-prescribing-health-economics-systematic-review.md b/inbox/archive/2026-01-01-frontiers-social-prescribing-health-economics-systematic-review.md
index f824f7de..47338df8 100644
--- a/inbox/archive/2026-01-01-frontiers-social-prescribing-health-economics-systematic-review.md
+++ b/inbox/archive/2026-01-01-frontiers-social-prescribing-health-economics-systematic-review.md
@@ -7,10 +7,14 @@ date: 2026-01-01
 domain: health
 secondary_domains: []
 format: paper
-status: unprocessed
+status: null-result
 priority: medium
 triage_tag: claim
 tags: [social-prescribing, health-economics, cost-effectiveness, evidence-quality, international-health-systems]
+processed_by: vida
+processed_date: 2026-03-18
+extraction_model: "anthropic/claude-sonnet-4.5"
+extraction_notes: "LLM returned 1 claims, 1 rejected by validator"
 ---
 
 ## Content
@@ -51,3 +55,15 @@ Complementary evidence on healthcare utilization (from separate reviews):
 ## Curator Notes
 PRIMARY CONNECTION: social isolation costs Medicare 7 billion annually and carries mortality risk equivalent to smoking 15 cigarettes per day making loneliness a clinical condition not a personal problem
 WHY ARCHIVED: Provides the economic evidence (or lack thereof) for social prescribing, the most scaled non-clinical health intervention globally. The SROI/financial ROI divergence is a key finding for understanding which behavioral health interventions can scale under healthcare payment models.
+
+
+## Key Facts
+- Social prescribing systematic review included 18 studies: 5 RCTs, 1 quasi-experimental, 12 mixed-methods
+- Geographic coverage: England, Wales, Ireland, Europe, Australia, New Zealand, Canada, USA
+- Intervention types: exercise/loneliness prevention (n=10), coaching (n=3), nature-based (n=3), dance/movement (n=2)
+- SROI ratios ranged from £1.17 to £7.08 per £1 invested
+- Financial ROI ranged from 0.11 to 0.43 per £1 invested
+- 28% average reduction in GP demand (range: 2-70%)
+- 24% average reduction in A&E attendance (range: 8-27%)
+- 15 of 17 utilization studies were uncontrolled before-and-after designs
+- Mean attrition rate across studies: 38%