text: For example , if the purpose of the study is illustrative , an appropriate basis for site selection could be typical , representative , or cluster ; the case studies would be conducted concurrently with other methods used in the main study ; prestructuring or guidance to the evaluators in the field would be low to moderate to permit the thickness and richness of insights needed ; data could be qualitative only or both qualitative and quantitative ; the case studies probably would be analyzed within sites only ; and the reporting would probably be narrative .
  
  ###
  
  Our results will be correct .