Chunk #23 — Results — Multivariate heritability models

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Heritability of obsessive-compulsive trait dimensions in youth from the general population.

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We examined the genetic correlations of the OC dimensions in our twin sample by decomposing the co-variance between pairs of dimensions into genetic and environmental components to estimate the extent that these components influenced the dimensions (Table 4).Table 4Multivariate twin analysis matrices for all OC dimensionsCleaning/ContaminationSymmetry/OrderingSuperstitionRuminationCounting/CheckingHoardingAdditive genetic influence (A) correlations with 95% CI Cleaning/Contamination----- Symmetry/Ordering0.58 (0.08, 1)---- Superstition0.60 (− 0.1, 0.99)0.70 (0.41, 0.99)--- Rumination0.57 (− 0.28, 0.96)0.86 (0.64, 1)0.82 (0.35, 1)-- Counting/Checking0.69 (0.33, 1)0.86 (0.73, 0.96)0.82 (0.62, 1)0.83 (0.60, 1)- Hoarding0.63 (0.05, 1)0.77 (0.52, 0.96)0.62 (0.19, 0.90)0.50 (− 0.02, 1)0.60 (0.30, 0.87)Common environmental influence (C) correlations with 95% CI Cleaning/Contamination----- Symmetry/Ordering0.78 (− 1, 1)---- Superstition0.72 (− 0.49, 1)0.99 (− 1, 1)--- Rumination0.28 (− 1, 1)0.68 (− 1, 1)0.65 (− 1, 1)-- Counting/Checking0.79 (− 1, 1)1 (− 1, 1)0.98 (− 1, 1)0.71 (− 1, 1)- Hoarding0.14 (− 1, 1)0.72 (− 1, 1)0.76 (− 1, 1)0.86 (− 1, 1)0.72 (− 1, 1)Unique environmental influence (E) correlations with 95% CI Cleaning/Contamination----- Symmetry/Ordering0.53 (0.3, 0.67)---- Superstition0.47 (0.27, 0.63)0.43 (0.21, 0.61)--- Rumination0.41 (0.21, 0.58)0.39 (0.20, 0.56)0.36 (0.15, 0.55)-- Counting/Checking0.22 (0, 0.43)0.36 (0.15, 0.55)0.35 (0.14, 0.55)0.46