Missouri County-level Study - General ← Knowledge Base Why was the County-level Study (CLS) conducted? How and when were 2011 CLS data collected? What kinds of questions were on the 2011 CLS? Who participated in the 2011 CLS? Who paid for this study? Were state dollars used? How can I obtain the complete study results? How will the information be used? These data are from adults. Do we have similar data for youth? Are there other states that have conducted a large county survey like this one?