In these patients, the mean interference score of the Leyton Obsessional Inventory-Child Version was 6.91 (range 0 to 35) and the mean number of positive responses was 8.29 (range 0 to 20). While three patients scored 25 or more points on the interference portion of the Leyton Obsessional Inventory-Child Version, none had 15 or more positive responses or 10 or fewer points on the interference score.
The researchers found that exercising was associated with more severe obsessive compulsive symptoms. They reported the following positive correlations with excessive physical exercise (more than three hours a day):
- Interference score on the Leyton Obsessional Inventory-Child Version (P=0.006).
- Positive responses on the Leyton Obsessional Inventory-Child Version (P=0.047).
- School-related interference score on the Leyton Obsessional Inventory-Child Version (P=0.01).
The lack of correlation between anorexia and OCD was unexpected, said Maria Valen?a, M.D., a psychiatrist in private practice in Indianapolis, who was not involved in the study.
