Phase III: Field testing & scale
revision
¬
Random sample each state
¬
Preletter inviting participation
¬
Mail questionnaire & scantron sheet
¬
Tickler follow-up: second & third packets
¬
Small incentive for participation
Initial sample size of 1,000 selected families will be chosen to ensure at least a 30% response rate; or 300 questionnaires per state. Similar protocol by PRAMS (CDC) for administration
58% response rate through 3 mailing cycles
