4. Results-
4.1 Socio-demographic data- Three groups were matched in terms of gender, marital status, religion, residence but there is significant difference in education (p=0.011) and occupation (0.000) (Table no 3). Mean age of patients’ group with cannabis dependence was 30.57±12.90, and there was no significant difference with groups of FDR and HC (Table no 2).
4.2 Cognitive functions- Performance of attention task (digit forward and digit backward) was significantly varied across three groups (p<0.05 for both the test). Post-hoc test revealed performance of digit forward in patients with cannabis use was significantly impaired from normal healthy control group, though there was no significant difference between group of FDR and HC. In digit backward test, performance of patients with cannabis use was significantly lower from normal healthy control. Performance of FDR group was reduced from HC group but no significant difference between performance of patients and FDR group (Table no 4).
In verbal memory test especially phonemic test, performance of patients with cannabis use was impaired than FDR group, whose performance in turn impaired from HC group. Though in categorical verbal memory, patients with cannabis use performed worse than FDR and HC group, but no significant difference was found between later two groups (Table no 4).
In our study visual memory was not differed significantly across three groups (Table no 4).
In tests for executive functioning, performance of patients with cannabis dependence was impaired compared to normal control as well as their FDR. Significant difference (p<.05) was found in mistakes of Stroop test and time for Trail-A test. But there was no significant difference between FDR and HC group (Table no 4).