Table 5 Estimates of additive genetic (A), shared environmental (C), and unshared environmental (E) variance components in coeliac disease liability, using two different values for population prevalence.

	Variance component
	A (95% CI)	C (95% CI)	E (95% CI)
Prevalence (threshold)
1/1000 (3.09)	0.57 (0.32–0.93)	0.42 (0.06–0.67)	0.01 (0.00–0.03)
1/91 (2.29)	0.87 (0.49–1.00)	0.12 (0.00–0.49)	0.01 (0.00–0.05)

95% CI, 95% confidence interval.