---
title: Observational Protocol Hierarchy
description: "Each observational protocol follows a heirarchy structure. This hierarchical structure involves three different version of a specific protocol.   The versioning structure is as follows:   All parts of"
---

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# Observational Protocol Hierarchy

Each observational protocol follows a heirarchy structure. This hierarchical structure involves three different version of a specific protocol.  

The versioning structure is as follows:  

- **Root Protocol** – The initial version of the protocol. (*e.g.,* *Knee OA PRP*)
- **Circle Protocol** - A version of the protocol adjusted to the requirements of a particular circle. (*e.g., Regen Med Knee OA PRP*)
- **Subscriber Protocol** – A version of the protocol adjusted to the requirements of a particular user (*e.g., John Smith Knee OA PRP*)

All parts of a observational protocol can be fully customized. Some common customization request are the following:

- Add  required surveys to a protocol  
- Add questions to surveys  
- Delete unnecessary parts of a protocol
- Change the scheduling and delegates of surveys.  

**Data points**

All data collected from cases shared within the root protocol will be displayed/reflected in your reports and statistics.

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