Abstract 002
IBS in at least one twin (pairs)
Concordant affected pairs
Discordant pairs
Casewise concordant
* p = NS versus DZ twins.
MZ
274
45 (16%)*
229 (84%)
90/319 (28%)*
DZ
273
46 (17%)
227 (83%)
92/319 (29%)
Total
547
91
456