Change body_mass_index type to allow ranges

[arschat]

For which schema is a change/update being suggested?

I would like to request an update to the human_specific.json schema.

What should the change/update be?

I would like to change the body_mass_index property type from number to string, in order to allow ranges (the way it's in the age property).

This update constitutes a major change to the schema(s) it affects.

What new field(s) need to be changed/added?

• Field name: body_mass_index (unchanged)
• Field description: (unchanged)
• Field type: string
• Examples:
• Regex: ^[0-1]?[0-9]{1,2}(\\.[0-9]+)?(-[0-1]?[0-9]{1,2}(\\.[0-9]+)?)?$ (allow ranges with decimal with a max limit set to 199 to allow extreme values)

Why is the change requested?

We've seen bmi recorded in binned ranges rather than absolute number, due to privacy reasons to prevent re-identification of donor. We want to be able to record those values.