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. 2008 Mar;9(1):51–59. doi: 10.2174/138920208783884874

Table 3. Clinical and Demographic Comparison of Multiplex and Simplex IS Families with Atleast 4 Members.

Ethnicity was determined by self-report of parental origin. Cobb angles were maximum measurements recorded prior to correction (caw, jah previously unpublished data).

Multiplex Simplex
% non-European 9 8
% male probands 18 17
Age at 1st presentation (std dev) 11.7 (+/-2.9) 12.1 (+/-2.8)
Cobb angle (median) 40.3° (39°) 42.1° (42°)