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  Indian J Med Microbiol
 

Table 2: Mean, mean difference, standard deviation of difference, standard error of mean difference from pre-test to posttest attitude scores and “t” value on educational package on prevention of substance use n= 200

Table 2: Mean, mean difference, standard deviation of difference, standard error of mean difference from pre-test to posttest attitude scores and “t” value on educational package on prevention of substance use n= 200