Genetic and environmental influences on fruit and vegetable consumption and depression in older adults

BMC Geriatrics

Table 3 Intraclass correlations and heritability estimates for fruit and vegetable intakes and depressive symptoms

	ICC MZ (95% CI) n = 104 pairs	ICC DZ (95% CI) n = 83 pairs	Heritability (95% CI)	Heritability *p-value*	Unique Environmental Influence (95% CI)
Fruit intake	0.14 (0.00, 0.32)	0.07 (0.00, 0.16)	0.14 (0.00, 0.32)	0.126	0.86 (0.68, 1.00)
Vegetable intake	0.39 (0.22, 0.54)	0.20 (0.11, 0.27)	0.39 (0.22, 0.54)	< 0.001	0.61 (0.46, 0.78)
Depressive symptoms	0.30 (0.13, 0.45)	0.15 (0.07, 0.22)	0.30 (0.13, 0.45)	< 0.001	0.70 (0.55, 0.87)

Heritability estimates using the AE model. P-values for heritability estimates were obtained by comparing the AE model with the E model.
95% CI 95% confidence interval, MZ monozygotic, DZ dizygotic, ICC intraclass correlation coefficient, Depressive symptoms based on Geriatric Depression Scale score. P-values for heritability under univariate AE model were obtained by comparing the log likelihoods of AE model vs E model. Fruit and vegetable intake adjusted for age, sex and total energy intake, depressive symptoms adjusted for age and sex

ISSN: 1471-2318