How was the study conducted? Who was included in this 2009 survey? Gallup interviewed a random, representative sample of 400 adults (age 18+) in most communities and 1,000 adults in Akron, Macon, Miami, Philadelphia, San Jose, St. Paul, Charlotte and Detroit; nearly 15,000 people were surveyed in total across the 26 communities from May. 27, through Aug. 31, 2010.
Fifteen-minute telephone interviews covering 73 questions were conducted in English and Spanish. Cell phone numbers were included as part of the potential sample.
Data were weighted to reflect the known adult population by age, gender, race and ethnicity based on U.S. Census data within each community.