. Author manuscript; available in PMC: 2014 Dec 1.

Published in final edited form as: J Speech Lang Hear Res. 2014 Jun 1;57(3):850–864. doi: 10.1044/2013_JSLHR-L-12-0240

Table 7. Univariate DeFries-Fulker extremes analysis: LI at 12 as a whole, and comparing persistent and late-onset LI.

Stability	N		Transformed co-twin mean		h²_g (95% CI)	c²_g (95% CI)	e ² _g
Stability	MZ	DZ	MZ	DZ	h²_g (95% CI)	c²_g (95% CI)	e ² _g
LI at 12 years	239	219	.68	.50	.35 [0.28, 0.45]	.33 [0.25, 0.42]	.32
Persistent LI	60	28	.75	.62	.25 [0.05, 0.56]	.50 [0.23, 0.77]	.25
Late LI	179	191	.65	.48	.34 [0.09, 0.43]	.31 [0.11, 0.48]	.35