Use String Contains function or InstanceCountif function

Summary

Use String Contains function or InstanceCountif function

Content

We have Global -> the Patient relationships.
Patient can have multiple diagnosis.

Integrated System has option of giving attribute values as:

• Comma Separated  Medical Diagnosis of the patient : Cardio,Renal,Vision
• As child entity records of the patient
  • Cardio
  • Renal
  • Vision

We need to write rules at the patient level depending upon the diagnosis.

What would be the better way:
1. Using string contains function on the diagnosis values ex : Contains("Cardio", Diagnosis) and create boolean attributes like

• the patient diagnosis is cardio 
• the patient diagnosis is renal

2. Create Diagnosis as child of the patient and use InstanceCountIf("Cardio",Child Entity Diagnosis) and create boolean attributes like