Table 3. Heritability of telomere length.

	h2	Confidence interval	P-value
ERF	0.65	0.59–0.72	1.45 × 10−61
GRAPHIC	0.73	0.68–0.78	2.10 × 10−94
LLS	0.86	0.77–0.95	6.53 × 10−57
NTR	0.62	0.59–0.65	2.51 × 10−125
QIMR	0.62	0.57–0.67	4.88 × 10−63
TwinsUK	0.74	0.72–0.75	2.45 × 10−92
Meta-analysis	0.70	0.64–0.76	2.31 × 10−111

Abbreviations: ERF, Erasmus Rucphen Family; LLS, Leiden Longevity Study; NTR, The Netherlands Twin Register; QIMR, Queensland Institute of Medical Research.