UIC University of Illinois at Chicago

RTC: Randomized Community Trial

Community-Based Tobacco Control Program

UIC University of Illinois at Chicago

Comprehensive Intervention

• Mass Media Campaign– Legacy “truth” Campaign

• School– Curriculum– School-wide Policy– Family Involvement

• Community Mobilization– Youth Access– Smoke-free environments– Other policy changes

UIC University of Illinois at Chicago

RTC with Matched Pairs• 6-12 matched pairs (need power analysis)

• Community = Defined Media Markets

• Matched pairs or strata:– Use existing data to match

• Population, smoking rates, media reach

– Possible use of baseline data to match• Youth smoking survey

UIC University of Illinois at Chicago

Randomization

• Each member of each pair agrees to randomization after baseline data collected

• OR

• Randomize to conditions, then recruit

UIC University of Illinois at Chicago

Design ElementsO OxxxxOxxxxOxxxxOxxxxOxxxxOO

RO O O O O O O O O

Improve Power:Multiple baseline measuresMultiple control groups per intervention group

UIC University of Illinois at Chicago

Steps• Baseline studies

– Tobacco use prevalence and survey – Qualitative of appropriateness of messages

• Second or more baselines• Implement all components of intervention• Monitoring of intervention implementation• Follow-up surveys

– Awareness of campaign components– Of intermediate changes - e.g., prices,

availability– Youth tobacco use attitudes and behaviors

UIC University of Illinois at Chicago

Specific Measures: Process• Pre-intervention measure of readiness

• Implementation– Exposure to media campaign– # youth involved in empowerment

programs– Community organizational

structures/involvement

• Post-study sustainability of intervention

UIC University of Illinois at Chicago

Measures: Intermediate

• Policy Change– School tobacco-free policies– Tobacco prices (and change in

prices)– Community smoke-free policies

• Enforcement of tobacco-free policies– School– Community

UIC University of Illinois at Chicago

Specific Measures: Outcomes

• Tobacco use by adolescents 13-15 – % ever used– % use currently

• % of youth “susceptible” to initiation• Exposure to 2nd hand smoke

– % children, nonsmoking adolescents/young adults

• Per capita sales of tobacco products– Cigarettes– Other tobacco products