Table 5.
Heritabilities for the factors of the YBOCS-CL
| H 2 r | SE | p-Value | |
|---|---|---|---|
| Phenotype: item-level derived factors | |||
| Factor 1 (Taboo) factor scale score | 0.26 | 0.12 | 0.006 |
| Factor 2 (Contamination/cleaning) factor scale score | 0.24 | 0.13 | 0.03 |
| Factor 3 (Doubts) factor scale score | 0.44 | 0.12 | 0.00002 |
| Factor 4 (Rituals/superstition) factor scale score | 0.34 | 0.16 | 0.009 |
| Factor 5 (hoarding/symmetry) factor scale score | 0.35 | 0.12 | 0.001 |
| YBOCS total sum score (one-factor model) | 0.39 | 0.15 | 0.004 |
| YBOCS total severity score | 0.52 | 0.13 | 0.00005 |
| Phenotype: category-derived factors | |||
| Factor 1 (Symmetry/counting) | 0.00 | NA | n.s. |
| Factor 2 (Aggressive/sexual/religious) | 0.58 | 0.17 | 0.00006 |
| Factor 3 (Contamination/cleaning) | 0.32 | 0.14 | 0.006 |
| Factor 4 (Hoarding) | 0.23 | 0.15 | 0.04 |