General

	- # *Male*
	- # *Female*
	- # *Other*
	- # Less than 6 months ago
	- # 6 months–1 year ago
	- # 1–3 years ago
	- # 3–5 years ago
	- # 5–10 years ago
	- # 10–15 years ago
	- # 15–20 years ago
	- # Over 20 years ago
	- # I don't know
	- # I prefer not to share this information
	- # Primary Progressive MS or PPMS
	- # Secondary Progressive MS or SPMS

**References** 

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**References** 
