the South region were associated wi

the South region were associated with being a dual user,
while age was not a significant factor.
Knowledge
Table 4 presents the results of the univariate analyses. The
percent of males who answered all 7 knowledge questions
correctly was calculated, with 57.7% who smoked
manufactured cigarettes only and 49.0% who smoked
RYO (p = 0.003). There was no difference between the
dual users and those who used manufactured cigarettes
only. After controlling for age, education, income, residence, and region, we did not find statistically significant
differences between RYO only and manufactured cigarette
only smokers (p = .194). A similar pattern of results was