California State University, Sacramento

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Population Research Center Division of Academic Affairs

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California Cannabis Consumption Study (C3)


PRC conducts C3 on behalf of the California Department of Pesticide Regulation (DPR) with the aim of measuring the quantity of cannabis product consumption by Californians in order to understand exposure to residual pesticides. This research will assist DPR in protecting the health of cannabis users from pesticide residues.
PRC has developed and tested an in-person interviewer guided survey to guide cannabis users through reporting their use of various cannabis products in the past month. In addition, the study will also collect limited demographic information. C3 does not collect names or contact information from study participants – all information collected is strictly confidential.

Once C3 resumes operations, PRC will develop relationships with cannabis dispensaries throughout California in order to recruit and survey cannabis users at the dispensaries.

Information for Dispensaries

All of the dispensaries invited to assist in this study will play a simple yet critical role in our research efforts. Both recruitment and interviewing will involve little to no involvement of you and your staff. Our goal is to be as unobtrusive as possible. All we need is a small area where we can set up a table to complete our interviews with people shopping at your storefront. Our setup will be similar to that of a vendor’s table, with the main difference being that we are not selling anything. Our research is for scientific purposes only, and it will greatly benefit the cannabis industry as a whole

A few important things to note:

  • Your dispensary’s participation in our recruitment and data collection efforts is strictly voluntary. You may choose not to participate at all or discontinue participation at any time. Recruitment and data collection at your dispensary location will not happen without your expressed permission, and will only take place at times pre-approved by you.
  • Neither you nor your staff will be asked to provide personally identifying information nor information about your business operations. We are only interested in learning about cannabis usage from the perspective of adult consumers who shop at dispensaries like yours.
  • Our trained staff will make every effort to be as unobtrusive as possible to your normal business operations.
  • Research staff will be available to answer any questions or address any concerns you have during the recruitment and interviewing process.