Audrain‐McGovern 2006.

Methods	Cohort study Baseline survey: 2000 Follow‐up: 1, 2 and 3 years (2001, 2002 and 2003) Site: northern Virginia, USA Research Question: Do novelty seeking and depressive symptoms have mediated or indirect effects on adolescent smoking progression through tobacco advertising receptivity? Analysis: Associative Latent Growth Curve Modelling, Indirect Effects Method
Participants	1053 of 2120 eligible grade 9 students from 5 schools included in final sample. Response rates for the 3 spring follow‐ups in the 10th, 11th and 12th grades were 96% (1081), 93% (1043), and 89% (1005) respectively. Final sample based on participants with all available data for novelty seeking, depression, tobacco advertising receptivity, and smoking progression, using pair wise missing data strategy for random missing data. Survey Method: Confidential self‐report survey administered by research member. Make‐up sessions available for absent students.
Interventions	Advertising receptivity was constructed as a dichotomous variable (high and low) from a five‐item scale. Low receptivity was defined as being able to name no more than one frequently advertised brand and not having a favourite brand or never having received or used promotional items. High receptivity was defined as having a favourite brand or willing to use promotional items. Novelty seeding personality and depressive symptoms were measured using the Temperament and Character Inventory and Centre for Epidemiolgic Studies Depression Scale, respectively, at baseline. Control variables: gender and race assessed at baseline; peer or family smoking exposure; alcohol and marijuana use measured at each follow‐up.
Outcomes	Smoking Behviour was summarised in four ordered categories representing increasing levels of smoking: Never Smoker; Puffer (never having smoked a whole cigarette); Experimenter (having smoked a whole cigarette but less than or equal to 100 cigarettes total in their lifetime OR smoked greater than 100 cigarettes in their lifetime but had not smoked in the past 30 days); Regular Smoker (smoked greater than 100 cigarettes in their lifetime and smoked in the past 30 days)
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