Chunk #20 — Results — Univariate heritability models

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

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(0.63, 0.82)n/a0.26 (0.18, 0.37) CBCL-OCS Total score0.62 (0.44–0.75)0.34 (0.20–0.47)AE4.959.0570.250.56 (0.40, 0.68)n/a0.44 (0.32, 0.60)TOCS dimensions Cleaning/Contamination0.56 (0.36–0.71)0.40 (0.27–0.53)ACE7.604.4060.620.30 (0, 0.66)0.26 (0, 0.52)0.45 (0.31, 0.63) Symmetry/Ordering0.72 (0.57–0.82)0.30 (0.15–0.43)AE8.675.3370.620.70 (0.57, 0.79)n/a0.30 (0.21, 0.43) Superstition0.70 (0.54–0.81)0.46 (0.33–0.58)ACE10.381.6260.950.50 (0.17, 0.78)0.20 (0, 0.44)0.29 (0.20, 0.43) Rumination0.55 (0.35–0.71)0.27 (0.12–0.41)AE6.047.9770.340.53 (0.36, 0.66)n/a0.47 (0.34, 0.64) Counting/Checking0.76 (0.62–0.85)0.37 (0.23–0.50)AE7.226.7870.450.77 (0.66, 0.84)n/a0.23 (0.16, 0.34) Hoarding0.66 (0.49–0.78)0.31 (0.16–0.44)AE4.549.4670.220.61 (0.46, 0.72)n/a0.39 (0.28, 0.54)The table shows intraclass correlations (ICC) within the monozygotic (MZ) and dizygotic (DZ) twins followed by Akaike’s information criterion (Δ AIC) differences, chi-square (Δχ2) differences, degrees of freedom (Δdf) differences, and the p values comparing the saturated model to the ACE model. 95% confidence intervals (CI) are shown. A: additive genetic influence; C: common environmental influence; D: non-additive genetic (or dominance) influence; E: unique environmental influence. OC obsessive–compulsive, TOCS Toronto Obsessive–Compulsive Scale, CBCL-OCS the Obsessive–Compulsive Scale of the Child Behavior Checklist