Approximately one in four respondents who gambled less than weekly and all respondents who gambled once a week or more often were administered the full interview, which included the NODS. Table 2 below provides an overview of key features of these 8 surveys. Your comment has not yet been posted. The study sgudy three independent, unlinkable data files. Journal of Studies on Alcohol. Today, more than 20 such instruments have been developed for a variety of purposes, including screening, assessment, diagnosis, treatment planning, and treatment outcome monitoring, with some instruments adapted specifically for use with youth Stinchfield et al.The NORC DSM-IV Screen for Gambling Problems (NODS) is a . of the national Gambling Impact and Behavior Study (Gerstein et al. ). National Opinion Research Center, et al. () Gambling Impact and Behavior Study, report prepared for the National Gambling Impact Study Commission. This week's issue of The Wager continues our analyses of the Adult Survey portion of the National Opinion Research Center's (NORC) Gambling Impact and.