Table 4.

Recent Studies on OCD

Study and author	Sample and methodology	Results and conclusion
Girishchandra and Khanna[59]	A total of 202 consecutive subjects with OCD were evaluated using the Yale Brown Obsessive Compulsive Scale- Symptom Check List and Scale for Assessment of form and content. The data was subjected to Factor analysis with varimax rotation	The results suggest that there are factors which are broadly common to the two scales. The main factors which emerged were washers, checkers, hoarding and two pure obsessional factors. The cross-cultural validity of these factors has been established for an Indian population
Phenomenology of obsessive compulsive disorder: A factor analytic approach	The study is one of the few prospectively conducted studies, with larger sample size, was attempted to validate the classification with gratifying results.	The course of illness was found to be similar in both the subtypes
Math et al.[60]	This study compared the 5-6 years course of the “predominantly obsessive” (n = 38) with that of the “mixed” subtype (n = 39). ICD-10 and Y-BOCS were used for diagnosis and severity assessment respectively	Although the study has small sample and retrospective in design, it has an implication regarding the validity of subtypes of OCD. Future studies of subtypes of OCD are required in larger sample with focus on neurobiologic and genetic parameters