A NestJS-based FHIR SDC Adaptive Questionnaire server that implements the PHQ-2/PHQ-9 depression screening workflow.

This server implements the adaptive questionnaire pattern where:

1. Patient starts with PHQ-2 (2 questions)
2. Server calculates the PHQ-2 score
3. If score > 2, the server returns PHQ-9 (9 questions) for further assessment
4. If score <= 2, the assessment is complete

The easiest way to run the entire stack (Aidbox + Adaptive Forms Server) with pre-loaded questionnaires:

docker-compose up -d

This will start:

• Aidbox at http://localhost:8888 (admin/password)
• Adaptive Forms Server at http://localhost:3000
• PostgreSQL database
• Pre-loaded PHQ-2 Questionnaire (via init-bundle)

Wait 30-60 seconds for services to initialize, then verify the questionnaire was loaded:

curl -u basic:secret http://localhost:8888/fhir/Questionnaire/phq-2

To stop:

docker-compose down

This implementation follows the FHIR SDC (Structured Data Capture) Adaptive Questionnaire specification:

• Implements $next-question operation
• Accepts QuestionnaireResponse
• Returns next Questionnaire based on adaptive logic
• Uses standard LOINC codes for answers