{"id":"45800ed0-26ef-5e39-bebc-cc122cea35b9","stable_key":"dff9f743-3766-5f20-a71e-d6d2bd5bfb6f:va-iron-combined-hemoglobin","predicate":"combined_with_iron_increases","statement":"Combined vitamin A and iron produced the largest hemoglobin response in the factorial pregnancy trial.","claim_class":"observational","status":"source_derived_draft","evidence_grade":"ungraded","direction":"context_dependent","is_public":true,"mechanism_event_id":"82002765-be6f-591f-9b59-10f2051f40cc","mechanism_event_label":"Correcting more than one shortage improved the measured response in this population.","subject":{"id":"ce392c9e-6483-5914-b18b-d6a2520dbbf6","slug":"vitamin-a","display_name":"Vitamin A","entity_type_key":"chemical_species"},"object":{"id":"2f3a8d0b-7b92-58d2-afc9-dd26a7cd1e0e","slug":"blood-hemoglobin-concentration","display_name":"Blood hemoglobin concentration","entity_type_key":"cellular_process"},"evidence_count":1,"mechanism_event":{"id":"82002765-be6f-591f-9b59-10f2051f40cc","stable_key":"dff9f743-3766-5f20-a71e-d6d2bd5bfb6f:va-iron-combined-hemoglobin-event","event_type":"observed_intervention","label":"Correcting more than one shortage improved the measured response in this population.","description":"Combined vitamin A and iron produced the largest hemoglobin response in the factorial pregnancy trial.","status":"provisional","compartment":null,"participants":[{"entity":{"id":"89bcaf42-b4ab-5760-8c2e-44eace10cee0","slug":"iron","display_name":"Iron","entity_type_key":"nutrient_element"},"role":"cointervention","stoichiometry":null,"state_label":"","sequence_order":0,"notes":""},{"entity":{"id":"ce392c9e-6483-5914-b18b-d6a2520dbbf6","slug":"vitamin-a","display_name":"Vitamin A","entity_type_key":"chemical_species"},"role":"subject","stoichiometry":null,"state_label":"","sequence_order":1,"notes":""},{"entity":{"id":"2f3a8d0b-7b92-58d2-afc9-dd26a7cd1e0e","slug":"blood-hemoglobin-concentration","display_name":"Blood hemoglobin concentration","entity_type_key":"cellular_process"},"role":"target","stoichiometry":null,"state_label":"","sequence_order":2,"notes":""}]},"contexts":[{"dimension":"availability_state","value_text":"nutrient_deficiency","comparator":null,"unit":null,"notes":"Imported condition classification; 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