Generalized Linear Models Used to Link Absolute Harm Perceptions of Tobacco Products Among Youth at W1 to New Use at W2

RRa95% CIaARRa,b95% CIa
 No or little harm1.50.7––3.0
 Some harm2.4c1.9–3.11.9c1.4–2.4
 A lot of harm1.01.0
 No or little harm3.0c2.4–3.82.2c1.7–2.8
 Some harm1.6c1.3–2.11.3c1.0–1.7
 A lot of harm1.01.0
Cigars overall
 No or little harm3.7c2.5–5.52.6c1.8–4.0
 Some harm1.6c1.2––1.8
 A lot of harm1.01.0
 No or little harm4.2c1.8–9.52.8c1.2–6.6
 Some harm1.40.7––2.2
 A lot of harm1.01.0
 No or little harm3.6c2.6–5.02.7c2.0–3.8
 Some harm1.5c1.0––1.7
 A lot of harm1.01.0
Smokeless tobacco
 No or little harm3.2c1.9–5.42.8c1.7–4.5
 Some harm1.50.9––2.2
 A lot of harm1.01.0
  • From the US PATH Study (2013–2015). The sample included youth who completed a W2 interview and had never used each product at W1 but had heard of the product, respectively. —, not applicable.

  • a Estimates and 95% CIs are weighted to represent the US youth population at W2.

  • b ARRs are from generalized linear models (binomial family with log link) that are controlled for age, sex, race, region, parental education, ever alcohol use, and ever tobacco use at W1. In adjusted models for e-cigarettes, cigars, and smokeless tobacco, a generalized linear model (Poisson family with log link) was used.

  • c Statistically significant at the α = .05 level.