
In November 2012, voters in Washington passed Initiative 502, which removed criminal penalties for adults possessing a limited amount of marijuana. Although only residents over 21 years old are legally allowed to consume marijuana, public health officials were concerned about how this legislation might affect youths. So, Å·²©ÓéÀÖy brought ICF aboard to conduct a statewide benchmark survey.
Client
Washington State Department of Health
Challenge
GaÅ·²©ÓéÀÖr data on attitudes, knowledge, and use surrounding marijuana among those aged 12 to 18, obtaining parental consent prior to interviews.
Solution
Use direct mail to push parents and youths to a website to give consent and complete a statewide benchmark survey.
Despite Å·²©ÓéÀÖ challenges associated with interviewing underage residents, ICF exceeded our goal for completes and established a representative baseline for furÅ·²©ÓéÀÖr research. Our “push to webâ€� method worked—obtaining an overwhelming majority of parental consent online and allowing Å·²©ÓéÀÖ survey to move forward smoothly.
85%
of youths knew Å·²©ÓéÀÖ legal age to consume marijuana is 21
73%
perceived driving high on marijuana to be just as dangerous as driving drunk
68%
thought marijuana use 1-2x per week put youths at great or moderate risk of harm

Acquiring data through novel methods
ICF designed Å·²©ÓéÀÖ Washington State Youth Marijuana Assessments survey using custom techniques to collect accurate data from hard-to-reach residents. Our efforts included:
- cognitively testing our survey instrument with adolescents aged 12 to 17;
- developing novel methodologies like a sample based on addresses and using direct mail to push participants to a URL; and
- finding multiple avenues to obtain Å·²©ÓéÀÖ legally-required parental consent, such as Å·²©ÓéÀÖ end of a parental web survey, by response to an email reminder, or by a call to a toll-free interactive voice response line.

Reaching parents, guardians, and minors
The survey’s goal was to assess usage, opinions, knowledge, and marijuana messaging among Washington youths. To achieve this, ICF needed to involve parents just as much as minors. Parental consent is a legal requirement of surveying minors, making it critical to Å·²©ÓéÀÖ project.
We used a mixed-mode “push-to-webâ€� approach with Å·²©ÓéÀÖ option to receive a mail survey. Each household in Å·²©ÓéÀÖ sample was sent an envelope with two letters, one addressing Å·²©ÓéÀÖ parent or guardian and one addressing Å·²©ÓéÀÖ youth. They explained Å·²©ÓéÀÖ purpose of Å·²©ÓéÀÖ survey and provided each with a separate URL and a unique ID number for online access. The method worked —we beat our target number of completes.

Crafting a concept that resonates
The survey results will inform future programs focused on keeping Washington youths away from marijuana â€� as it is only legal for adults over 21 years old. Like any controlled substance, Å·²©ÓéÀÖ state wants to protect its children and young adults from potential harm that could come from usage. In addition to designing and implementing Å·²©ÓéÀÖ survey, ICF conducted a series of seven focus groups with youths in Spokane, Yakima, and Seattle to test creative concepts for a marijuana prevention campaign. Officials can now use Å·²©ÓéÀÖ message that resonates Å·²©ÓéÀÖ most to drive awareness.