Niven /niv-en/ [2 sylls.] as a boys' name. Niven's root is Latin, and the name Niven means holy, sacred; little bone; servant of the saint's disciple. Niven is a variant transcription of Nevin (Latin).
The average life expectancy for someone with MS is 35 years after the symptoms begin. This represents a life expectancy of 95 percent of someone who does not have multiple sclerosis. Most people with the disease can function effectively; however, a rare form of acute MS can be fatal within weeks.
Incidence and Prevalence of Multisystem Atrophy. MSA affects men twice as often as women. The average age of onset is 50 years old, and the average survival time after initial diagnosis is 10 years. As many as 10 percent of Parkinson's cases that are incorrectly diagnosed are later identified as MSA upon autopsy.