Table 1

Clinical and demographic details of MS index cases and controls


MS Index Cases
Spousal controls

n
6585
2509
Present mean age in years (SD)
49.0 (9.6)
50.9 (9.2)
Sex Ratio (f:m)
3.1:1
0.4:1
% Relapsing Remitting MS
67.9
/

SD = standard deviation, (f:m) = female to male sex ratio

Ramagopalan et al. BMC Neurology 2008 8:30   doi:10.1186/1471-2377-8-30