Abstract
The Trail Making test (TMT) is a brief paper and pencil neuropsychological test often used for screening for cognitive impairment. The value of the TMT is examined in a sample of 5619 males and 2902 females was drawn from electronic files of data from the Drug Abuse Treatment outcome Study (DATOS), a naturalistic, prospective cohort study that collected data from 1991–1993 in 96 programs in 11 cities in the United States. Data were analyzed to determine the effects of specific drugs of abuse on parts A and B of the TMT in this large sample of patients in drug abuse treatment programs. Most subjects, regardless of type of drug abused, on TMT parts A and B appeared to fall within normal limits relative to commonly accepted cutoff scores. These results suggest that the TMT parts A and B would have great value as screening measures for cognitive impairment in a drug abuse treatment population.
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