. Author manuscript; available in PMC: 2007 Sep 25.

Published in final edited form as: Twin Res Hum Genet. 2007 Feb;10(1):25–32. doi: 10.1375/twin.10.1.25

Table 3.

Twin Correlations and Heritabilities

Twin Correlations (N Pairs)
	Pd16	SSS17	RAPI18	RAPI25
MZM	.60 (344)	.65 (330)	.64 (306)	.48 (276)
DZM	.37 (439)	.33 (408)	.47 (397)	.24 (315)

MZF	.60 (500)	.60 (495)	.59 (478)	.48 (428)
DZF	.35 (435)	.35 (422)	.29 (408)	.24 (366)

Heritabilites (95% CI's)
	Pd16	SSS17	RAPI18	RAPI25
Males	.60 (.54, .65)	.65 (.59, .70)	.47^* (.39, .61)	.48 (.39, .55)

Females	.61 (.56, .66)	.61 (.56, .66)	.61 (.55, .66)	.48 (.41, .54)

Note: Variables as defined in Table 1; MZM = monozygotic male twin pairs; DZM = dizygotic male twin pairs; MZF = monozygotic female twin pairs, DZF = dizygotic female twin pairs; 95% Confidence Intervals for the Heritability estimates shown inside parentheses.

Heritability estimates from AE-models except for the estimate for RAPI18 from males, where a significant effect of Common Environments, C = .20 (.09, .26) was found.