Table 3.

Concordance rates for epilepsy, febrile seizures and other special syndromes combined over samples

	MZ			DZ
	Pairs	Pairwise	Probandwise	Pairs	Pairwise	Probandwise	MZ vs DZff
Epilepsy	203	0.16 0.11<cr<0.21f	0.39 0.33<cr<0.45	395	0.02 0.01<cr<0.04	0.07 0.05<cr<0.10	p<0.0001
Febrile Seizures	234	0.17 0.12<cr<0.23	0.41 0.36<cr<0.47	425	0.05 0.03<cr<0.07	0.14 0.11<cr<0.17	p<0.0001
Other Situation-Related Seizures	31	0.02 −.03<cr<0.06	0.06 −.02<cr<0.15	71	0.01 −.01<cr<0.03	0.01 −.01<cr<0.04	ns

^fDenotes the 95% confidence interval for the concordance rate (cr)

^ffTest of difference between MZ and DZ probandwise concordance rates